RV PROPANE DETECTOR Industries Safe-T-Alert gas detector feature an 85 db alarm (at 10 feet) with a red visual alarm.
Also the unit feature an amber malfunction indicator along with a green operational indicator.
Surface Mount: 5.5″ W x 3″ H x 1.4″ , works with 12 VDC
Cutout Dimensions: 1-7/8″ H x 5-3/8″ W x 1-1/4″ D. White; MFG#40-441-P-W