Xintex Propane Fume Detector w/2 Plastic Sensors - No Solenoid Valve - Square Black Bezel DisplayPropane Fume Detector w 2 Plastic Sensors No 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 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