---
title: Shelly Plus Smoke Alarm
date: 2024-09-17T21:38:37Z
modified: 2026-05-14T12:02:58Z
permalink: "https://tech.co.za/product/shelly-plus-smoke-alarm/"
type: product
status: publish
excerpt: Shelly Plus Smoke Alarm
wpid: 508121
product_brand:
  - Shelly
product_type:
  - simple
product_visibility:
  - featured
product_cat:
  - Smart Home
featured_image: "https://tech.co.za/wp-content/uploads/2024/09/alarme_de_fumo_shelly_smart_wifi_shelly_plugue_o_fumo_5_1x_1-1.jpg"
---

### 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.