Gas Leak Valve Manipulator (without Gas Detector)

It’s an automatic gas valve controller to avoid accident. Nowadays most of the old and the young usually forget to close the gas valve which may lead to serious accident. But this automatic gas valve controller could connect with a gas sensor and alarm which can detect poisonous gas when it threatens the old and the young at home, and then the alarm will give out alarm to remind you to handle this urgency. Certainly it can open and close home gas valve and water valve automatically but it demands that the valve rotation angle range should be of 90 degree.