Pilot gas alarms are powered directly by a 12V battery.
They sense and give an alarm for LPG, butane and propane. The units are not calibrated for diesel fumes and petrol vapour but these will be detected at higher concentrations. Sensors should be fitted as low as possible but must not get wet. They are important and effective safety equipment. The Dual Gas Alarm has two sensors on 3.5 metres of 3-core cable. The unit draws 178 milliamps at standby rising to 210 milliamps in the event of an alarm. Dimensions: 35mm x 65mm x 120mm