Shelly SNSN-0031Z smoke detector Photoelectrical reflection detector Interconnectable Wireless

Shelly Plus Smoke (the Device) is a smart photoelectric smoke alarm, which is effective at detecting slow fires that smolder for hours before bursting into flames.<br><br>Sources of these fires may include burning cigarettes left on couches or bedding.Shelly SNSN-0031Z. Power source: Battery, Battery voltage: 3 V, Battery life: 5 year(s). Height: 3.39 mm, Depth: 86 mm