N21 Installation and Operation Manual
Contents
1. a 12 N21 Node Status Screen reete da 12 N21 Nod Status Soren 2 a a 12 N21 Port A Configuration Screen asori ae e Ie 13 N21 Port B Configuration Screen ii 13 N21 Screen ICONS cos M 13 Chapter 5 N21 Node Web Page Example 15 Example of the Node Parameter Screen 15 N21 Node Quick Installation Guide 1 N21 Node Models ae 1 5 Pin XLR Gender Changer i 1 Sale Warnings sali elia areali 1 Electrical Specie atOriS oo anne era 2 Fitling the 65151 65153 Back BOXES i ete eet qot 2 Flush Mounting Model 65 15T E22 ae 2 Surface Mounting Model 65153 i 2 Chapter 1 General Information N21 Node Models Safety Warnings The N21 Dual and four Port Ethernet DMX Nodes provide compact and cost effective networking solutions for lighting facilities of any size Based on a 32 Bit ARM processor all N21 nodes utilize the Linux operating system for stable 10 100 BaseT operation Nodes may be configured with any PC or Strand Lighting Wireless Focus Remote utilizing the FireFox M web browser The N21 Network Node is available in five different configurations The catalog numbers are as follows 65151 N21 Two Port Node Power over Ethernet 2 gang does not include back box use RACO 696 or equivalent 65152 N21 Two Port Node2. Input Voltage Alternative 24vdc 48vdc local power supply via connector J2 Pin 1 is V Pin 2 is Common Input Current At 48vdc nominal 45mA with backlight at full At 24vdc nominal 90mA with backlight at full N21 Node Model 65152 Input Voltage 24vdc supplied from the dimmer rack power supply Input Current At 24vdc nominal 90mA with backlight at full N21 Node Model 65154 Input Voltage 5vdc supplied from an external power supply mounted in the auxiliary rack Input Current At 5vdc nominal 350mA typical 500mA maximum with backlight at full The 65151 N21 Node includes the faceplate and electronics only and is suitable for flush wall mounting The back box RACO 696 equivalent is supplied by others not by Strand Lighting The 65153 N21 Node is housed within a metal back box supplied by Strand Lighting and is suitable for surface wall mounting Both models are intended for permanent installations using earthed conduit to carry the network cable The unit should not be operated without the earthed metal conduit as it may fail EMC compliance 1 Prepare the wall by cutting an appropriate sized hole for the back box RACO 696 or equivalent Determine the most suitable position for cable entry and drill a hole in the back box for cable entry Ensure that the hole allows cables to enter the box without fouling any components within the box when the node electronics are installed 3 Insert the back box in
3. 65153 P N21 2 port Node Power over Ethernet portable mount back box with C Clamp U Bolt hardware 65154 N21 4 port Node 1U rack mount enclosure with universal AC adapter The 65151 can be powered from either an external 24 to 48VDC power supply or from a PoE compatible Ethernet Switch or midspan endspan PoE injector using IEEE P802 3af 2003 power PoE or Power over Ethernet The N21 Node has two ports which use a female 5 pin XLR connector standard for DMX Out When a node port is configured for DMX In a gender changer is required to convert the port from female to male Avoid spillage from liquids If this occurs switch power off immediately Protect from excessive dust or other contaminants For indoor use only The equipment is designed and manufactured to comply with international safety standards IE950 UL1950 and CS 950 and is intended for use as part of a lighting control system It must not be used for any other purpose where there is a risk of safety to persons The equipment contains power voltages There are no serviceable parts within the N21 Node housing Installation of the N21 Node should be undertaken by a suitably qualified person N21 Node Quick Installation Guide 1 Electrical Specifications Fitting the 65151 65153 Back Boxes Flush Mounting Model 65151 Surface Mounting Model 65153 N21 Node Models 65151 65153 and 65153 P Input Voltage 48vdc supplied as Power over Ethernet PoE
4. Some states do not allow limitations on how long an implied warranty lasts and do not allow the exclusion or limitation of incidental or consequential damages so the above limitation or exclusions may not apply to you This warranty gives you specific legal rights and you may also have other rights which vary from state to state Prefix Strand Lighting Offices Thank you for choosing Strand Lighting and the N21 Series Node We trust that the equipment will meet all your dimming needs and will provide you with reliable service for many years Strand Lighting can assure you that every effort has been made to ensure that the equipment has been designed to meet the highest professional standards and that dimmer racks and their components have been assembled inspected and tested in accordance with our strict quality assurance program Should you encounter any problems or difficulties with your N21 series node please contact the nearest Strand Lighting service representative For a complete list of Strand Lighting offices and service centers visit our Web site at www strandlighting com This manual describes the installation and operation of the N21 range of Ethernet DMX Nodes Strand Corporate Headquarters Strand Lighting Inc 6603 Darin Way Cypress CA 90630 USA Tel 1 714 230 8200 Fax 1 714 899 0042 Strand Asia Headquarters Strand Lighting Asia Limited 20 F Delta House 3 On Yiu Street Shatin N T Hong Kong
5. Tel 852 2757 3033 Fax 852 2757 1767 Strand Europe Headquarters Strand Lighting Europe Unit 2 Royce Road Fleming Way Crawley West Sussex RH10 9JY Tel 44 0 1293 554010 Fax 44 0 1293 554019 Table of Contents This manual describes the setup and operation of the N21 Ethernet Node Chapter 1 General Information 1 N21 Node Models eletto 1 safety WV ANMINGS escis iiie coto io ina 1 Electrical SpecificatioNS nnns 2 Chapter 2 Installation 1 esee esse 3 Fitting the 65151 65153 Back BOxXES 3 Flush Mounting Model 65 To Thern ES 3 Surface Mounting Model 65153 3 5 Pin XER Gender Changer i 3 Setting up Networking on a Windows PC 3 Chapter 3 N21 Node Configuration 5 Pre Configuring the N21 Network Node nennen 5 Configuring the N21 Network NOde ii 5 Node BUON d 5 A 7 DMX A BUN OM saree E Delicado DALL ALE 7 DMX B BUIO TY sen alain 8 Chapter 4 N21 Node Screens eese 11 2T BOORG OBI nta ida eene ilusion 11 N21 Main Sereen ati nee ecce tropa eee ea 11 N21 Network Configuration Screen 1 i 11 N21 Network Configuration Screen 2 12 N21 Network Link Screen
6. http 192 168 0 71 to display the configuration pages shown below using the mini browser see chapter 5 for an example of a standard web page Note N21 nodes can only be configured using a FireFox web browser You may download this software at http www mozilla com en US firefox The N21 Node can be configured as follows These examples are using the http 192 168 0 xxx mini webpage to configure the node An example of a full web page screen can be seen in chapter 5 below Node Button Net Button DMX A Button DMX B Button Update Button Accesses information specific to the node Access information specific to the network Accesses information specific to DMX A Accesses information specific to DMX B Updates the node with current configuration When pressed the following options are available Name Aunique identifier character string of up to 16 characters This can be any name used to identify the node on the network Location Aunique identifier character string of up to 16 characters This can be any name used to identify the location of the facility or PoE port connected to the Node Chapter 3 N21 Node Configuration 5 Breaker Port A unique identifier character string of up to 16 characters This can be any name used to identify the power breaker Passcode Enter the default passcode 2606 to unlock all of the screens If the passcode is not entered here all of the fields can be modified but the N21 Nod
7. the wall and secure the conduit to the back box 4 Leave the cables in the back box ready for connection 1 Remove the four 4 screws from the front panel and lift the front plate upwards and away from the back box Keep the screws safe for later use 2 Determine the most suitable position for the cable entry and drill a hole in the back box for cable entry Ensure that the hole allows cables to enter the box without fouling any components within the box when the node electronics are installed 3 Ensure that the back box is level by placing a spirit level on top of the box and mark the four mounting holes 4 Drill four 4 holes in the wall and secure the back box to the wall using screws and suitable hardware 5 Secure the conduit to the back box and leave the cables in the back box ready for connection N21 Node Quick Installation Guide PHILIPS sense and simplicity
8. Common Input Current At 48vdc nominal 45mA with backlight at full At 24vdc nominal 90mA with backlight at full N21 Node Model 65152 Input Voltage 24vdc supplied from the dimmer rack power supply Input Current At 24vdc nominal 90mA with backlight at full N21 Node Model 65154 Input Voltage 5vdc supplied from an external power supply mounted in the auxiliary rack Input Current At 5vdc nominal 350mA typical 500mA maximum with backlight at full Chapter 2 Installation Fitting the 65151 65153 Back Boxes Flush Mounting Model 65151 Surface Mounting Model 65153 5 Pin XLR Gender Changer Setting up Networking on a Windows PC The 65151 N21 Node includes the faceplate and electronics only and is suitable for flush wall mounting The back box RACO 696 equivalent is supplied by others The 65153 N21 Node is housed within a metal back box supplied by Strand Lighting and is suitable for surface wall mounting Both models are intended for permanent installations using earthed conduit to carry the network cable The unit should not be operated without the earthed metal conduit as it may fail EMC compliance 1 Prepare the wall by cutting an appropriate sized hole for the back box RACO 696 or equivalent 2 Determine the most suitable position for cable entry and drill a hole in the back box for cable entry Ensure that the hole allows cables to enter the box without fouling any components wi
9. Power over Ethernet SN110 retrofit For use with surface mount recess mount nodes only 65153 N21 Two Port Node Power over Ethernet with surface mount back box supplied by Strand Lighting 65153 P N21 Two port Node Power over Ethernet portable mount back box with C Clamp U Bolt hardware 65154 N21 Four port Node 1U rack mount enclosure with universal AC adapter The 65151 can be powered from either an external 24 to 48VDC power supply or from a PoE compatible Ethernet Switch or midspan endspan PoE injector using IEEE P802 3af 2003 power PoE or Power over Ethernet Avoid spillage from liquids If this occurs switch power off immediately Protect from excessive dust or other contaminants For indoor use only The equipment is designed and manufactured to comply with international safety standards IE950 UL1950 and CS 950 and is intended for use as part of a lighting control system It must not be used for any other purpose where there is a risk of safety to persons The equipment contains power voltages There are no serviceable parts within the N21 Node housing Installation of the N21 Node should be undertaken by a suitably qualified person Chapter 1 General Information 1 Electrical Specifications N21 Node Models 65151 65153 and 65153 P Input Voltage 48vdc supplied as Power over Ethernet PoE Input Voltage Alternative 24vdc 48vdc local power supply via connector J2 Pin 1 is V Pin 2 is
10. Strand Lighting Strand Lighting is a Philips group brand PHILI pS N21 Installation and Operation Manual N21 Manual Part Number 2 450203 010 Revision Level 1 1 2 Revision Date 25 July 2008 Written By Charles Coley Il The material in this manual is for information purposes only and is subject to change without notice Strand Lighting assumes no responsibility for any errors or omissions which may appear in this manual For comments and suggestions regarding corrections and or updates to this manual please contact the nearest Strand Lighting office El contenido de este manual es solamente para informaci n y est sujeto a cambios sin previo aviso Strand Lighting no asume responsabilidad por errores o omisiones que puedan aparecer Cualquier comentario sugerencia o correcci n con respecto a este manual favor de dirijirlo a la oficina de Strand Lighting m s cercana Der Inhalt dieses Handbuches ist nur f r Informationszwecke gedacht Aenderungen sind vorbehalten Strand Lighting uebernimmt keine Verantwortung f r Fehler oder Irrtuemer die in diesem Handbuch auftreten F r Bemerkungen und Verbesserungsvorschlaege oder Vorschlaege in Bezug auf Korrekturen und oder Aktualisierungen in diesem Handbuch moechten wir Sie bitten Kontakt mit der naechsten Strand Lighting Niederlassung aufzunehmen Le mat riel d crit dans ce manuel est pour information seulement et est sujet changements sans pr avis La co
11. available Screens Page Button N21 DME NODE N21 Main Screen N21 DMX NODE Node Name Network Active lnactive Port A amp B Labels Port A amp B Defined As Slot Monitor Bar Graphs N21 Network Confiquration Screen 1 N21 DMX NODE Network Configuration page 1 n Node Firmware version Node Hostname Node IP Address Chapter 4 N21 Node Screens 11 N21 Network Confiquration Screen 2 N21 DMX NODE Network Configuration page 2 Node Netmask Node Gateway n Node MAC Address N21 Network Link Screen N21 DMX NODE Network Link Page Link Present Yes No 0 or 1 Link Speed 10BaseT or 100BaseT Link Duplex Half or Full N21 Node Status Screen 1 Node Status Page 1 N21 DMX NODE Node Temperature Fahrenheit or Celsius Node Date Node Up Time N21 Node Status Screen 2 N21 DMX NODE Node Status Page 2 Available Memory Available Flash RAM N21 Port A Confiquration Screen N21 Port B Confiquration Screen N21 Screen Icons Port A Configuration N21 DMX NODE Port Set as DMX In DMX Out SVN SMX Off Port Label n Port Active Inactive Port B Configuration N21 DMX NODE Port Set as DMX In DMX Out SVN SMX Off NetSlot range and start number Port Active Inactive Port Label The N21 Node has three 5 icons which are present in the upper right corner They are Status Link e This will be pr
12. aving set up the NODE options press UPDATE to update the Node configuration Net Button When pressed the following options are available 21 Mini interface Li Node net DMxA OMXB Update Hostname N27 71 IP Address 192 1620 71 IP Netmask 255255 255 0 Gateway 0000 IP Netmask Gateway Hostname IP Address A unique identifier character string of up to 20 characters This can be any name used to identify the Host Name on the network A unique identifier on a network using the TCP IP protocol to route data to a particular node within the network The format of an IP Address is a 32 bit numeric address comprising four numbers separated by periods Each number can be 0 to 255 The first three sets of numbers on a Class C network indentify the network and the last set of numbers identifies the node Default IP Address is 192 168 0 71 Note If the IP address on the node is changed the new IP address will need to be entered on the browser to load the new address This is used only in large networks comprising sub networks Refer to your system network administrator Default Netmask is 255 255 255 0 This is used only in large networks that require routing between sub networks Refer to your system network administrator Default Gateway is 0 0 0 0 Having set up the NET options press UPDATE to update the Node configuration DMX A Button DMX A Label 21 Mi
13. e cannot be updated until a password is entered If the password has not been entered and the UPDATE button is pressed a window will be displayed and the password can be entered at that time Note The password must be entered on the standard web page to be Authorized to make changes This is located at HOME AUTHORIZE see chapter 5 below Backlight Idle Adjusts the low backlight level The range is between 0 and 10 Levels set below 3 are likely to be invisible Backlight Active Adjusts the high backlight level The range is between 3 and 10 The high level is used when the LCD keys have been pressed Backlight Hold Adjusts the time in seconds that the display should Time hold the high backlight level after a keystroke The range is between 10 and 600 seconds This also sets the menu timeout LCD Contrast Adjusts the contrast of the LCD screen The range is 10 to 10 Set this to O unless there is a good reason to change it The extreme limit values may result in a display that is difficult to read Blink LCD Selecting this option will cause the LCD screen to blink No Mux Hold This option allows you to select the Hold Time Time should DMX be interrupted The Hold Time will freeze the current look on stage until the time runs out at which time the lights will fade to black The minimum Hold Time is 10 Minutes The Maximum Hold Time is Infinite No MUX Netslot The Netslot is used to monitor the loss of DMX H
14. esent when the N21 Node has linked with the Ethernet port on the switch x x m mi Link Speed e 10Mbps will show a white S on a blue background e 100Mbps will show a blue S on a white background Link Duplex e Half duplex will show a white F on a blue background e Full duplex will show a blue F on a white background Down Arrow e Indicates DMX output traffic This icon is shown for either or both DMX ports when the port is actively transmitting DMX512 data Up Arrow e Indicates DMX input traffic This icon is shown for either or both DMX ports when the port is actively receiving DMX512 data Chapter 4 N21 Node Screens 13 Chapter 5 N21 Node Web Page Example Example of the Node Below is an example of an N21 Node web page The web pages are Parameter Screen accessed when the IP address for the node is entered Example hi Once the Node has been accessed all of the web pages can be browsed and configured The web page example below is located under the HOME SETUP SYSTEM PARAMETERS and provides a single screen to set the majority of the options of the N21 Node Note Without entering the Authorization Password the web pages will only provide preview information and cannot be changed When the password 2606 is entered under HOME AUTHORIZE button the upper screen will highlight in red that you are Privileged and allow you to edit the fields tame CIC vo Ever NN TETTI Sho
15. figured note the settings If no IP Address and Netmask is specified select Use the following IP Address and enter the IP Address192 168 0 150 and Subnet Mask 255 255 255 0 and Click OK Chapter 2 Installation 3 Pre Configuring the N21 Network Node Configuring the N21 Network Node C21 Mini interface Li Node Met DMX A DMXB Update Node Button o EH Mini interface G Nosal Net Dux DMG Update Name LODOS Location Orlando FL BreakeriPort FS116P1 Passcode Backlight Idle 5 Backlight Active 3 Backlight Hold time 10 LCD Contrast 7 Blink LCD O No MUX Hold Time 60 No MUA Netslot 1 Chapter 3 N21 Node Configuration N21 network nodes are configured at the factory with common default values It is therefore necessary to change the network configuration for each node before it is installed onto the network It is logical that the configuration of the DMX ports and the LCD setting should be done at the same time and each N21 Node labeled with its IP Address ready for installation in the appropriate back box auxiliary rack or dimmer rack The default Network Configuration of all N21 Nodes is as follows Node Name N21 71 IP Address 192 168 0 71 IP Netmask 255 255 255 0 IP Gateway 0 0 0 0 Select the Network configuration page as follows With the N21 Node powered and connected to a network open the browser window and enter the default IP Address of the N21 Node
16. mpagnie Strand Lighting n assume aucune responsibilit sur toute erreur ou ommission inscrite dans ce manuel Pour tous commentaires ou suggestions concernant des corrections et ou les mises jour de ce manuel veuillez s ll vous plait contacter le bureau de Strand Lighting le plus proche Copyright 2008 Strand Lighting All rights reserved Information contained in this document may not be duplicated in full or in part by any person without prior written approval of Strand Lighting Inc Its sole purpose is to provide the user with detailed installation information for the equipment supplied The use of this document for all other purposes is specifically prohibited 3 YEAR LIMITED WARRANTY Strand lighting warrants that this product will be free from defects in workmanship for materials This warranty is void on any electronic controls which have been overloaded abused improperly installed or altered in any manner Strand Lighting s sole obligation will be at its option to repair or replace any electronics controls pro9duct proven defective if it is returned postage prepaid to Strand Lighting 6603 Darin Way Cypress CA 90630 USA Strand Lighting will not pay for any charge back or charge for labor or material that does not have its prior written approval This warranty shall be in lieu of any other warranty express or implied including but not limited to any implied warranty of merchantability or fitness for a particular purpose
17. n interface LI Nada Nat DMXB Lipelato DMX A Label SL Elec DAIX A Mode DOME out DMX A In Start Slot 1 DMX A Mode DATS A In End Slot 512 DAX A In Starting Netslot 2001 DAIX A Monitor Slot 1 Start End Net Slot Priority HIP DMX A In Start Slot DMX A In End Slot DMX A In Starting Net Slot DMX A Monitor Slot When pressed the following options are available This field contains a character string of up to eight 8 characters used to identify the function of the DMX Port Off Turns port OFF DMX out Sets Port for DMX output DMX in Sets port for DMX input SVN Sets port for Strand Vision Net Protocol SMX Sets port for Strand Report Net Outlook SWC Net Slot range start number for DMX A Input Net Slot range end number for DMX A Input Start number of the Net Slot for DMX A Input This field determines which of the 512 slots from the DMX port are displayed on the status bar graph at Chapter 3 N21 Node Configuration 7 DMX B Button EM Mini interlace a Node Ner Dux pwxa update DAA E Label SH Elec DMXH Mode DMX in DAIX B In Start Hot 1 DALA E In End Slot gt 12 DADA E In Starting Netslot 1 DMA E Monitor Slot 2 start End Met Slot Priority HIP 1 hl 2001 Start End and Net Slot Fields DMX A Out End Slot DMX A Out Net Slot Start Netslot Priority HTP the sides of the LCD screen Any slots between 1 and 512 can be ente
18. red These fields allow you to enter a range of DMX outputs to be patched to a range of Netslots for each DMX port Initially the window permits two ranges of DMX output slots to be entered However when the second range is entered and the UPDATE button is pressed another blank row is added permitting another range of outputs to be entered for another Netslot range This will continue until all ranges of outputs have been entered Enter the start number of the DMX range Enter the end number of the DMX range Enter the Netslot start number Each Netslot can be set as one 1 of sixteen 16 priority levels or none by selecting from the drop down menu Each Netslot can be set to take preference when highest by selecting HTP from the drop down menu Having set up the DMX A options press UPDATE to update the Node configuration When pressed the following options are available DMX B Label DMX B Mode DMX B In Start Slot DMX B In End Slot DMX B In Starting Net Slot DMX B Monitor Slot This field contains a character string of up to eight 8 characters used to identify the function of the DMX Port Off Turns port OFF DMX out Sets Port for DMX output DMX in Sets port for DMX input SVN Sets port for Strand Vision Net Protocol SMX Sets port for Strand Report Net Outlook SWC Net Slot range start number for DMX B Input Net Slot range end number for DMX B Input Start number of
19. the Net Slot for DMX B Input This field determines which of the 512 slots from the DMX port are displayed on the status bar graph at Start End and Net Slot Fields DMX B Out End Slot DMX B Out NetSlot Start Netslot Priority HTP the sides of the LCD screen Any slots between 1 and 512 can be entered These fields allow you to enter a range of DMX outputs to be patched to a range of Netslots for each DMX port Initially the window permits two ranges of DMX output slots to be entered However when the second range is entered and the UPDATE button is pressed another blank row is added permitting another range of outputs to be entered for another Netslot range This will continue until all ranges of outputs have been entered Enter the start number of the DMX range Enter the end number of the DMX range Enter the Netslot start number Each Netslot can be set as one 1 of sixteen 16 priority levels or none by selecting from the drop down menu Each Netslot can be set to take preference when highest by selecting HTP from the drop down menu Having set up the DMX B options press UPDATE to update the Node configuration Chapter 3 N21 Node Configuration 9 Chapter 4 N21 Node Screens The following section reviews the N21 Node screens N21 Boot Screen During the boot up process the LCD screen display shows the Strand Lighting logo Press the page button to scroll through the eight
20. thin the box when the node electronics are installed 3 Insert the back box in the wall and secure the conduit to the back box 4 Leave the cables in the back box ready for connection 1 Remove the four 4 screws from the front panel and lift the front plate upwards and away from the back box Keep the screws safe for later use 2 Determine the most suitable position for the cable entry and drill a hole in the back box for cable entry Ensure that the hole allows cables to enter the box without fouling any components within the box when the node electronics are installed 3 Ensure that the back box is level by placing a spirit level on top of the box and mark the four mounting holes 4 Drill four 4 holes in the wall and secure the back box to the wall using screws and suitable hardware 5 Secure the conduit to the back box and leave the cables in the back box ready for connection The N21 Node has two ports which use a female 5 pin XLR connector standard for DMX Out When a node port is configured for DMX In a gender changer is required to convert the port from female to male In order to set up networking on your PC you must have a Network Interface Card and TCP IP Protocol installed From the Start menu select Control Panel Select the Network Connections Right click on the Network Adaptor and select Properties Highlight Internet Protocol TCP IP and select Properties If an IP Address and Netmask is already con
21. wNet Inactive DMX A SL Elec EE TS TSE DMX In Inactive Temperature T MM MEME Dotetimefi ELE 2027222 Privileged Yes rr Ma xa 8 ECO i io Hostname Y c21 30 IP Address 132 163 0 30 iPNetmask 255 255 255 0 DMX A Mode DX out DIX A Caber SL Elec DMX A Monitor Slot DMXB Mode Y DM in DIEB Label SR Elec DMX B Start Slot f DMX B End Slot 9412 DMX B Starting Hetslot f 1 DMX B Monitor Slot Ho MUX Hold Time Ho MUX Hetslot 1 Enable SMX Sharing SMX Sharing Group System UID 14354 SMTP server address 0 00 0 ll o iR o ne SMTP sender address SMTP recipient address Chapter 5 N21 Node Web Page Example 15 N21 Node Quick Installation Guide N21 Node Models N21 DMX NODE 5 Pin XLR Gender Changer Safety Warnings The N21 Dual and four Port Ethernet DMX Nodes provide compact and cost effective networking solutions for lighting facilities of any size Based on a 32 Bit ARM processor all N21 nodes utilize the Linux operating system for stable 10 100 BaseT operation Nodes may be configured with any PC or Strand Lighting Wireless Focus Remote utilizing the FireFox M web browser The N21 Network Node is available in five different configurations The catalog numbers are as follows 65151 N21 2 Port Node Power over Ethernet 2 gang 65152 N21 2 Port Node Power over Ethernet SN110 retrofit 65153 N21 2 Port Node Power over Ethernet with surface mount back box
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