Update your RV LP gas alarm to a combination CO/LP gas alarm. Replace old MTI Safe-T-Alert model 30-442 flush mount gas detectors and CCI controls LP gas detector models 7770 and 7773 with a single alarm for both LP gas and carbon monoxide. Replaces all models and years of Fleetwood RV's LP gas detectors while adding CO protection. 12VC wire in. Detects LP gas/propane operational range 7-16V. UL/CSA listed. 1 year warranty. Flush mount 6 3/8"W x 2 7/8"H x 1"D White