Honeywell 5800SMOKEV Wireless Smoke Heat DetectorHoneywell Resideo 5800SMOKEV Wireless Smoke Heat Detector (5808W3 Replacement) 5800SMOKEV is a wireless photoelectric multi criteria detector capable of detecting smoke, heat, rate of rise and low temperature. It's designed to provide early detection of smoke and fire, and reduce nuisance alarms. It has improved detection of smoke from common synthetic materials found in many modern home furnishings, which typically burn faster and hotter.