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. |
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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