Signaliser ??-4.3 is designed to control the content of natural gas (??4) and carbon monoxide (??) in the air of premises, informing the personnel about emergency situations by means of light and sound signals, as well as issuing a control signal to close the solenoid valve.
The alarm device can be operated together with valves with pulse control 9 - 42 V.
The detector is included in the register of measuring instruments 85041-22
The signalling device received the declaration of the Customs Union of the EAEU N RU D-RU.NX37.V.11442/20 dated 28.10.2020
The detector has additional versions:
1) ??-4.3B - designed only for informing by light and sound signals about exceeding the threshold concentration;
2) ??-4.3? - the device is powered by ultra-low voltage 5V (or 12-24V).
There is no INPUT and VALVE connector;
3) ??-4.3D - the device is powered by 5 V (or 12-24 V) ultra-low voltage. There is no possibility to connect the valve
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