Propane Fume Detector & Alarm w/2 Plastic Sensors & Solenoid Valve - Square Black Bezel Display. Detect propane leaks early and automatically shut off gas supply to prevent personal injury and possible explosions.. Features/Specifications:. 2-5/8" Square Black Display with LEDs & Silence/Test Button. Solenoid Valve & Adapter. Solenoid Valve Control Button. Automatically Closes Solenoid Valve. 68 dBA Alarm will sound & Red LED will light at 20% of the LEL. Simple Installation. 9-30VDC. Operating Temperature: -40F to 185F (-40C to. 85C). Reverse Polarity Protected. Current Draw @ 12VDC: Nominal:55mA / Maximum:780mA