ST-622 Thermoptek Smoke & Fire Alarm 10-Year Battery Detector

Smoke and fire alarm detector with Thermoptek multi-sensor technology combining an optical smoke chamber with temperature detection for faster response to developing fires. Features 85dB integrated siren, red status LED, large test button, and hush functions (Smart Silence, Sleep Easy) with reduced nuisance alarms (Toast Proof). Designed for ceiling or wall mounting and powered by a sealed-in lithium battery with a 10-year service life. Package contains 1 piece of smoke and fire alarm detector.