Features Detect Propane leaks early to prevent personal injury and possible explosions. 2-3/16" Round 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- -40°F to 185°F (-40°C to 85°C) Reverse Polarity Protected Current Draw Current New - 12VDC- Nominal-55mA / Maximum-95mA Specifications Color: Black Weight: 1.6 lbs