First Alert BRK SM610 Smoke Alarm with 10-Year Sealed Battery

First Alert BRK SM610 Smoke Alarm with 10-Year Sealed Battery Stand-alone photoelectric smoke alarm powered by a sealed 10-year lithium battery, so no battery replacements are needed for the life of the alarm. Includes SoftCue low-battery and end-of-life reminders, LED indicators, a standardized mounting bracket and an optional trim ring. Not interconnectable. Key Features Photoelectric smoke sensing, 10-year service life Sealed 10-year lithium battery - no battery replacements for the life of the alarm SoftCue replacement reminders for low battery and end-of-life LED indicators for alarm status and end-of-life Latching and silence features Self-diagnostics with malfunction warning; end-of-life signal (5 chirps) Two tamper-resistant locking pins Full-function test button Fully screened sensing chamber Standardized mounting bracket and optional trim ring Specifications Sensor Photoelectric Power source 10-year sealed lithium battery Alarm dimensions 5.2 in dia. x 1.76 in H Weight 0.39 lb (176.9 g) Audio alarm 85 dB at 10 ft (3 m) Interconnect No Operating temperature 40-100 °F (4.4-38 °C) Humidity range 20-95% RH non-condensing (agency compliance 93% max) Color White Standards UL 217; meets NFPA 72, NFPA 101 and ICC requirements In the Box SM610 smoke alarm (sealed battery) Standardized mounting bracket Easy-Fit trim ring (optional use) Mounting screws and anchors (shown in manufacturer contents photo) Related Models SM610-CP (6-pack) SM601 (replaceable AA version) Replaces: SMI110, SM310, SM210, SM210L, SM210V Specifications taken from the manufacturer's published literature. Manufacturer specifications are subject to change without notice.