Gas contamination signaling devices

Signaling devices of a gas contamination are intended for continuous control of dovzryvoopasny concentration of natural gas, and also dovzryvoopasny concentration of natural gas and dangerous concentration of carbon monoxide in room air.

At emergence of a gas contamination resistance of a sensitive element of the device decreases that leads to operation of the boundary device of an electric circuit of a signaling device.
At the same time the device gives light and sound signals.

Besides, the signaling device can operate the electromagnetic valve blocking supply of gas at detection of a gas contamination.