Carbon Monoxide/ Propane Leak Detector

Carbon Monoxide/ Propane Leak Detector; Detects Both LP And CO Gas; Alerts To Leak With Beeping; Without Digital Display; Surface Mounting; 4.21 Inch Length x 2.61 Inch Width x 0.57 Inch Height; 8 To 15 Volt DC; Black; With Two Universal Mounting Bezels; Two Wire Design; Single