Carbon monoxide alarms ??-2A are designed for continuous automatic control of carbon monoxide (CO) content in the air.
The principle of operation of the alarms is based on the conversion of gas concentration into voltage. The obtained voltage value is compared with the value set during calibration, corresponding to the threshold level of gas concentration.
If the measured gas concentration equals or exceeds the threshold level, sound, light and control signals are generated in accordance with the logic of the detector operation.
The detectors are available in two versions:
1)??-2-2-2?G - with power supply from the network ~220 V and valve control unit;
2) ??-2-2-2?? - with power supply from an external DC source of 5 V, without valve control unit.
All versions of signalling devices are equipped with outputs for outputting signals to other external devices.
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