Shelly Plus Smoke Alarm

Device identification

Device name: Shelly Plus Smoke
Device model: SNSN-0031Z
Device SSID: ShellyPlusSmoke-XXXXXX

Short description

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.

Features

Battery operated
LED indication
Low battery warning
Alarm pause (Hush mode)
Test function
Easy Installation
DIN EN 14604 certified

Main applications

Residential

Connectivity

Wi-Fi
Bluetooth

Each connectivity option can be enabled or disabled by the user.

User interface

Inputs

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.

Outputs

LED indication
- 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.
Buzzer
- Button pressed: 1 short beep.
- Testing: 3 short beeps.
- Alarm: Continuous loud beeps.
- Low battery warning: Short beep once every 53 seconds.

Specifications

Type	Value
Physical
Size (DxH):	86x31 ±0.5 mm / 3.39x1.22 ±0.02 in
Weight:	95 ±1 g / 3.35 ±0.05 oz
Mounting:	Ceiling
Shell material:	Plastic
Color:	White
Device lifespan:	10 years
Environmental
Ambient temperature:	-0 °C to 55 °C / 32 °F to 131 °F
Humidity:	30 % to 95 % RH
Electrical
Power supply voltage AC:	N/A
Power supply voltage DC:	1x 3 V CR123A/CR17335 battery
Battery lifespan:	5 years (with original battery)
Sensors, meters
Smoke sensor:	Photoelectric
Radio
RF band:	2400 - 2495 MHz
Max. RF power:	<20 dBm
Wi-Fi protocol:	802.11 b/g/n
Wi-Fi Range:	Up to 30 m / 100 ft indoors and 50 m / 160 ft outdoors (Depends on local conditions)
Bluetooth Protocol:	4.2
Bluetooth Range:	Up to 10 m / 33 ft indoors and 30 m / 100 ft outdoors (Depends on local conditions)
MCU
CPU:	ESP32-U4WDH
Flash:	4 MB
Firmware capabilities
Webhooks (URL actions):	10 with 2 URLs per hook
Scripting:	No
MQTT:	Yes
CoAP:	No