First Alert SC7010BV Smoke & Carbon Monoxide Alarm With Voice, 120 Volt Thresholds subtract 1 1/2” from each

subtract 1 1/2” from each length of chimney pipe

Classic styling

Made of high density polyethylene

for optimal support and capability to drill in hard to reach spaces

Designed for low-slope roof maintenance

First Alert SC7010BV Smoke & Carbon Monoxide Alarm With Voice, 120 Volt Thresholds subtract 1 1/2” from eachHighlights: First hardwired talking smoke carbon monoxide combo alarm with photoelectric smoke sensing 120V AC with 2 "AA" battery back up 60 HZ Photoelectric smoke sensor Electrochemical CO sensor 85 db horn and patented voice warning with location programming Alarm and low battery latch Single button silences nuisance alarms and low battery warning Mounts to any electrical box up to 4" size Note: Restricted in massachusetts, Vermont state