Safe-T-Alert 30-442-P-BL 12V Propane Alarm Flush Mount – BlackMTI Industries has your safety in mind with a range of smoke and gas detectors. Protect your home or boat with essential safety equipment that will help prevent disaster in your future. Make sure to replace your CO Alarms and Gas Detectors that are Over 5 Years Old.Additional InfoOverall Dimensions6 3/8 W x 2 7/8 H x 1 3/8 DPower Supply and Current Draw:90mA @ 12 vDCOperating Temperature:-40 F to +158 FMount StyleFlushLifespan5 YearsReplacement for7770.230, 7770.231, 7770.234, 7770.281, 7770-284Note: This detector may have a manufacture date ranging from 2011 to 2018. The 5 year lifespan does not start until 12V DC power is connected to the detector. This information has been provided to us by the manufacturer.DocumentsOperation and Installation Manual