C-TEC NC944 4 Zone Call Controller
Overview
The C-TEC NC944 is an attractively designed four zone call controller created for use with C-TEC’s 800 Series call system components. It provides clear zonal indication, local mute and reset control, and a straightforward way to build compact assistance call systems in accessible building applications.
Fully compatible with a wide range of C-TEC devices such as pull cords, pressure pads, reset points and call points, the NC944 is suitable for disabled toilet alarm systems and similar emergency assistance applications where dependable local indication is required.
The unit is capable of distinguishing between standard and emergency calls using different audible patterns and LED indications. It requires a separate NC930 12V 250mA PSU and can be used either as a four zone controller or as part of a small multi-zone system where up to two NC944s are connected to one NC930 power supply to provide up to eight zones.
Key Features
- Four Zone Call Control: provides indication and management for up to four call zones.
- Compatible with 800 Series Components: works with pull cords, pressure pads, reset points, call points and related C-TEC accessories.
- Standard and Emergency Call Indication: constant tone for standard calls and intermittent tone for emergency calls.
- RESET and MUTE Buttons: local controls included on the front of the unit.
- Four Zonal Alarm LEDs: clear visual identification of active calls by zone.
- Emergency and Auxiliary Outputs: supports connection to external indicators such as overdoor lights and sounders.
- Expandable Mini-System: two NC944 controllers can be combined on one NC930 PSU for up to eight zones.
- Standard UK Back Box Mounting: mounts on a standard 25 mm UK double gang back box.
Typical Applications
- Accessible toilet alarm systems
- Assistance call systems in public buildings
- Small multi-point emergency call installations
- Changing rooms and assisted care areas
- Hotels, healthcare facilities and leisure centres
- Compact call systems requiring zonal visual and audible indication
Technical Specification
| Model No / Description | NC944 - 4 Zone Call Controller |
| Power Supply | Requires a separate NC930 12V 250mA PSU |
| Quiescent Current | 0mA (none) |
| Maximum Battery Size and Type | Optional NC941B battery back up kit available for use with the NC930 12V 250mA PSU |
| Alarm Current | Determined by the number and type of field devices connected to the call controller/system |
| Outputs | EMERG OUT goes to 0V on any active Emergency call to drive external indicators such as overdoor lights/sounders, max. sink current 20mA. 4 x AUX OUT go to +12V steady for a Standard call or pulse at +12V for an Emergency call. |
| LED Indicators | 4 x red zonal alarm LEDs lit steady for a Standard call and pulsing for an Emergency call; internal buzzer steady for Standard calls and intermittent for Emergency calls |
| Control | Disable Mute; Disable Reset |
| Call Acknowledgement Facility | No. If required use an NC910 or NC920 10 or 20 Zone Call Controller instead |
| Dimensions | 146 W x 87 H x 21 D mm. Mounts on a standard 25mm UK double gang back box |
| Construction / Finish | Plastic |
| IP Rating | IP41 |
| Weight | 128g |
| Operating Temperature | -5ºC to +40ºC. Max. relative humidity 95% non-condensing |
The NC944 requires a separate NC930 12V 250mA PSU. Where battery back-up is needed, an optional NC941B battery back-up kit can be used with the NC930 power supply.
Wiring
System Summary
The NC944 offers a practical solution for projects requiring compact four zone assistance call indication. Its compatibility with the C-TEC 800 Series, clear zoning LEDs, audible call differentiation and output flexibility make it suitable for a wide range of accessible and emergency call applications.
For larger installations, two NC944 units can be combined on a single NC930 PSU to provide a mini-call system of up to eight zones, making it a flexible option for small to medium scale projects.
