First Alert PC910 Photoelectric Combo Smoke & Carbon Monoxide Alarm, White, 3 V BF15 Square spring steel screw for

Square spring steel screw for tight connections

Non-marking gray casters (not assembled)

Without Side Spray

plug into an existing power source

Used in hot water boiler applications to protect against excessive pressure on all type of hot water heating boiler equipment

First Alert PC910 Photoelectric Combo Smoke & Carbon Monoxide Alarm, White, 3 V BF15 Square spring steel screw forHighlights: No battery changes for the life of the alarm Photoelectric nuisance resistant technology New sleek thin design Mute silence button End of life signal Versatile wall or ceiling mount Easy slide mounting bracket Emits T3 pattern Electrochemical sensor Power LED and alarm indicator No battery changes for the life of the alarm Separate sensors to detect smoke and CO, the two alarm systems work independently Usage for residential applications