First Alert PC910 Photoelectric Combo Smoke & Carbon Monoxide Alarm, White, 3 V BF15 A vent in the lid

A vent in the lid releases steam when the container is placed in the microwave

Contains a good supply of nitrogen for growth & vigor

Temperature range -20 degree to 120 degree fahrenheit

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

First Alert PC910 Photoelectric Combo Smoke & Carbon Monoxide Alarm, White, 3 V BF15 A vent in the lidHighlights: 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