First Alert PC910 Photoelectric Combo Smoke & Carbon Monoxide Alarm, White, 3 V BF15 The advanced self-leveling technology allows

The advanced self-leveling technology allows floor finish projects to be completed in only 2 coats instead of the traditional 3-4 coats

Contains a good supply of nitrogen for growth & vigor

plug into an existing power source

Without Side Spray

Square spring steel screw for tight connections

First Alert PC910 Photoelectric Combo Smoke & Carbon Monoxide Alarm, White, 3 V BF15 The advanced self-leveling technology allowsHighlights: 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