GAS Guardsman leak alarm device GS-712 (stand alone)
*** Has an LCD screen that shows the level of Gas leakage.
- When gas is detected, the device will:
+ Pick up the siren.
+ Close the gas valve.
+ The flash blinks continuously.
+ Display the level of gas leakage on the LCD screen.
- There is a backup battery when power is lost.
- Use 220V electricity.
- Support control closing gas valve when detecting Gas leak
   (valve must have an electronic open / close function).