NC943B - Single zone call controller c/w PSU, accept button, relay and on-board rechargeable battery
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List Price £166.83 incl. VAT
C-TEC - NC943B

Single zone call controller c/w PSU, accept button, relay and on-board rechargeable battery

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Product Description

The NC943B is a single zone call controller that has a 12V 140mA PSU and standby battery. It is compatible with the C-TEC entire range of 800 Series Call System components.

It is capable of indicating standard with a constant tone and emergency an intermittent tone calls. And includes a volume adjustable sounder and a link-selectable Call Accept/Reset button.

It feature a power On and Alarm ‘CALLING’ LEDs. As well as volt-free relay output for the optional connection of externally powered beacons, etc (relay activates on active call signal). And a 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.
Description NC943B
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 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
Dimensions 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
Operating temperature -5ºC to +40ºC. Max. relative humidity 95% non-condensing
Weight (Gross) 0.29kg
  • UVDB Registered
  • PLASA Member
  • Member of BESA
  • BSI 9001
  • ISCE supporting member