7920 - OPERATING INSTRUCTIONS
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1. Security enquiries emsgroup co uk twitter Iso AR RUA A qae Systems Limited www emsgroup co uk emstechnical pp pany The information contained within this ierature ts cormect at time of publishing The EMS Group reserves the right to change any infomation regarding products as part of Its continual development enhancing new technology and reliability The EMS Group advises that ary product ilterature issue numbers are checked with tts head office prior to any formal specification being written2. 7920 OPERATING INSTRUCTIONS Introduction The UHF Contact Operated Transmitter has been designed to be used with both the System 1000 IRIS 7256 and Single Way 7703 receiver units The transmitter is a UHF transmitter working at 458 MHz with an output power of less than 1mW The transmitter operates both as a normally closed N C or normally open N O device Alarm signals are generated at each change of state of the transmitter input The Transmitter The transmitter is mounted in a moulded enclosure measuring 100mm x 62mm x 20mm Cable access is via Knockouts on the rear and top of the enclosure The unit is powered by a 6V alkaline battery Battery life depends upon how often the transmitter is used For average usage the battery will last in excess of 12 months Figure 1 shows the contact transmitter with the key inserted this is necessary to enable the removal of the wall mounting connection plate Ensure access is available for the key after installation of plate Tamper Knockout Figure 1 The Wall mounting connection plate should be screwed to the wall using Suitable fixings ensuring the tamper knockout is cut from the moulding and screwed to the wall for rear tamper protection as shown in figure 2 Figure 3 shows the contact side of the transmitter Cable connections are at a made between the screw terminals as shown and then connected to the two WALLY MOUNINO HOLE way terminal block fitted on the wall mounting plate Not
3. e Tamper knockout must be screwed to wall Before fitting the unit to its wall mounting connection plate ensure the 6v Figure 2 battery is connected into the battery compartment as shown in figure 4 When fitting the transmitter into its bracket ensure that it is clipped in firmly A click should heard once the unit is installed into the bracket Test Mode SILVER SCREWS K7 tan aa AK7 0G The contact transmitter terminal connections can be tested without the use of the main control panel Press and release the test button shown in figure 4 the red light CONNECT To CONTACT will flash on the front of the unit to indicate test mode Resistor Colours Note l 2K2 Red Red Red 4K7 Normal Operation of the contact will make the light flash at a different 4K7 Yellow Violet Red 6K9 Alarm rate confirming the correct connectivity i Figure 3 The unit will automatically return to normal operation mode after a minute COMPARTMENT Battery Replacement 4 BATTERY After replacing the batteries it is recommended that the device is tested to frest mun ensure the batteries have been inserted correctly and the device has been returned to a fully operational condition Figure 4 EMS Group Head Office Technology House 6 o Sea Street k Herne Ba s Kent C16 A Fire Industry Association EY Oy rn United Kingdom EANG 22222 FOO USON J 150 9001 P Radio Fire amp
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