Ships via Standard Ground
Typically ships in 1-2 Days
Uses ionization principle to detect invisible products of combustion. Can sense fire well in advance of either heat or heavy smoke. Yet will not sound the alarm in a room full of heavy smokers. Also detects toxic gases. Features a test button that shows if a circuit is in proper operating order. Meets all UL 217 requirements. Includes 9-volt battery. Ship. wt. 3 lbs.