Single Zone Call Controller c/w 12V 250mA PSU


  • A single zone call controller c/w a 12V 250mA PSU and link-selectable Mute/Reset button.
  • Fully compatible with C-TEC’s entire range of 800 Series Call System components.
  • Capable of indicating standard (constant tone) and emergency (intermittent tone) calls.
  • Power On and Alarm ‘CALLING’ LEDs.
  • Open collector output goes to 12V when the controller’s onboard buzzer sounds.
  • Mounts on a standard UK 25mm double gang flush or surface back box.
  • Optional NC941B 0.3A battery battery backup kit also available.


Mains supply230V 50/60Hz (36mA max. current). 50Hz frequency.
Internal power supply12V d.c.
Total output current limited to250mA.
Quiescent current0mA (none).
Max battery size and typeOptional NC941B 12V 0.3Ahr battery back up kit available.
Alarm currentDetermined by the number/type of field devices connected to the call controller/system.
Auxiliary relaysNone.
Open collector outputs1 x Output terminal (goes +12V steady when the controller’s buzzer sounds). 20mA max.
IndicatorsRed Alarm LED; Green Supply Present LED.
ControlsLink-selectable Reset/Mute button.
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 NC941).
Expansion connectionsBatt + and Batt – (for connection to an optional remote NC941B battery back up kit).
Call acknowledgement functionalityNo.
Product dimensions (mm)147 W x 87 H x 34 D mm. Mounts on a standard 25mm UK double gang back box.
Construction & finishPlastic.
IP RatingIP41.
Operating conditions/temperature-5ºC to +40ºC. Max. relative humidity 95% non-condensing.


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