Shelly Plus Smoke
Device name: Shelly Plus Smoke
Device model: SNSN-0031Z
Device SSID: ShellyPlusSmoke-XXXXXX
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.
Sources of these fires may include burning cigarettes left on couches or bedding.
Low battery warning
Alarm pause (Hush mode)
Bluetooth (for inclusion purposes)
Each connectivity option can be enabled or disabled by the user.
One push button
Press and hold for 3 sec to test the Device.
Press briefly to silence an alarm.
Press briefly 3 times to put the Device in Setup mode for 2 minutes.
Press briefly 5 times to factory reset. Device stays in Setup mode for 2 minutes.
Normal operation: Red light flashes once every 53 seconds.
Testing: 3 red light flashes.
Alarm: Continuous red light flashes.
Malfunction: Red light flashes twice every 53 seconds
Hushed alarm: Red light flashes once every 10 seconds.
Low battery warning: Red light flashes once every 53 seconds.
Hushed low battery warning: Red light flashes once every 53 seconds (with no sound).
Device in Setup mode: Green light flashes quickly.
Device in Setup mode for 2 minute: Green light flashes slowly.
Button pressed: 1 short beep.
Testing: 3 short beeps.
Alarm: Continuous loud beeps.
Low battery warning: Short beep once every 53 seconds.
86x86x31 ±0.5 mm / 3.39x3.39x1.22 ±0.02 in
95 ±1 g / 3.35 ±0.05 oz
-0 °C to 55 °C / 32 °F to 131 °F
30 % to 95 % RH
2000 m / 6562 ft
Power supply voltage AC:
Power supply voltage DC:
1x 3 V CR123A/CR17335 battery
5 years (with original battery)
2400 - 2495 MHz
Max. RF power:
Up to 30 m / 100 ft indoors and 50 m / 160 ft outdoors
Up to 10 m / 33 ft indoors and 30 m / 100 ft outdoors
Webhooks (URL actions):
10 with 2 URLs per hook
Web interface guide
Read the Shelly Plus Smoke web interface guide.
Components and APIs
Battery material safety data sheet
Printed User Guides
Shelly Plus Smoke user and safety guide
Shelly Plus Smoke networking guide