Shelly Plus Smoke – Smart Wi-Fi Smoke Alarm
Overview
Shelly Plus Smoke is a smart Wi-Fi photoelectric smoke alarm designed to detect slow-burning fires that smoulder before developing into open flames. It provides immediate local alarms and remote notifications, allowing fast response and integration into automated safety routines.
The device is completely wire-free, battery powered, and integrates directly with the Shelly Smart Control app without requiring a hub.
Key Features
• Photoelectric smoke sensor for slow-smouldering fires
• Loud audible alarm (>85 dB) with visual light alert
• Instant notifications via the Shelly Smart Control app
• Smart scenes and automations with other Shelly devices
• Wire-free installation with no angle limitations
• Up to 5 years battery life
• Wi-Fi operated – no hub required
• Supports MQTT and webhooks
Technical Specifications
Battery
Battery type: 1 × 3V CR123A / CR17335
Battery life: Up to 5 years (with original battery)
Sensor
Smoke sensor type: Photoelectric
Operating Conditions
Operating temperature: 0°C to +55°C
Operating humidity: 30% to 95% RH
Max altitude: 2000 m
Connectivity
Wi-Fi protocol: 802.11 b/g/n
Wi-Fi frequency: 2400 – 2495 MHz
Wi-Fi range:
• Up to 50 m outdoors
• Up to 30 m indoors
Bluetooth: 4.2
Bluetooth range:
• Up to 30 m outdoors
• Up to 10 m indoors
Integrations
MQTT: Yes
Webhooks (URL actions): 10 (2 URLs per hook)
Scripting: No
CoAP: No
Physical
Dimensions (H × W × D): 86 × 86 × 31 mm
Installation Notes
• Battery-powered device with no wiring required
• Suitable for ceiling or wall mounting
• No orientation restrictions
• Designed for indoor use
• Requires Wi-Fi connection for remote notifications and automations
In the Box
• Shelly Plus Smoke
• Mounting accessories
• Quick start guide