Single Zone Call Controller With Relay & Optional Onboard Battery Backup


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    Single Zone Call Controller With Relays & Optional Onboard Battery Backup

    • A single zone call controller c/w a 12V 140mA PSU and standby battery.
    • Compatible with C-TEC's entire range of 800 Series Call System components.
    • Capable of indicating standard (constant tone) and emergency (intermittent tone) calls.
    • Includes a volume adjustable sounder and a link-selectable Call Accept/Reset button.
    • Power On and Alarm ‘CALLING’ LEDs.
    • Volt-free relay output for the optional connection of externally powered beacons, etc (relay activates on active call signal).
    • Standby battery provides up to 24 hours standby and 15 minutes alarm running time.
    • Mounts on a standard UK 25mm double gang flush or surface back box.
    • Also available as part of the NC951 Accessible Toilet Alarm Kit.


    • Mains Supply : 230V 50/60Hz (23mA max. current). 50Hz frequency
    • Internal Power Supply : 12V d.c
    • Total Output Current Limited To : 140mA
    • Quiescent Current : 0mA (none)
    • Max Battery Size And Type :
      • No Battery Backup (NC942) : None
      • Onboard Battery Backup (NC943B) : Includes an onboard 500mA battery back up facility providing 24 hours standby and 15 minutes alarm running time
    • Alarm Current : Determined by the number/type of field devices connected to the call controller/system
    • Auxiliary Relays : Includes one set of volt free relay contacts (NO/C/NC). Relay activates when a call is received by the controller. Rated at 30V d.c. @ 1A
    • Open Collector Outputs : None
    • Indicators : Red Alarm LED; Green Supply Present LED (flashes green when standby battery is active)
    • Controls : Adjustable volume control; Disable standby battery; Link-selectable Call Accept/Reset button. When Accept is selected indicators on relevant field devices will activate intermittently to reassure users help is on the way
    • Connections : -Ve (common -Ve terminal for all devices); +Ve (+12V nominal supply for powering emergency call points, overdoor lights, etc.); Signal (the trigger line which activates the NC943B)
    • Expansion Connections : None
    • Call Acknowledgement Functionality : Yes
    • Product dimensions (mm) : 147 W x 87 H x 34 D mm. Mounts on a standard 25mm UK double gang back box
    • Construction & Finish : Plastic
    • IP Rating : IP30
    • Weight : 294g
    • Operating Conditions/Temperature : -5ºC to +40ºC. Max. relative humidity 95% non-condensing


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