Shelly 2.5 2-channel Wi-Fi smart relay switch, with power meter and roller shutter mode

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Shelly 2.5 is one of the world’s smallest 2-channel WiFi-equipped smart relay switch, with power meter feature. Thanks to its small size, it fits into the wall under the power socket or a standard light switch. It is also a perfect choice to control roller shutters, motorized window openers and shaders.

SKU: ALL-REL-SHE25 Category:
EAN: 3809511201855


Shelly 2.5 (later version of Shelly 1) is one of the smallest, open source, WiFi-equipped device to smart control circuits with built-in power meter. This version manages 2 channels and features roller shutter control. Due to its small size you can built it in behind a power socket / standard light switch or into an electrical cabinet even when the cabinet is heavy-packed.

Shelly 2.5 extremely small sized only 39 x 36 x 17mm. 30 percent smaller than former version Shelly 2, and 5 percent smaller, than Shelly 1.

Building Shelly 1 behind them you can control lights by keeping your existant switches and monitor their status (turned ON / OFF).

Supports roller shutter (motor driven roller shutter) control: one circuit controls rolling up, the other one controls rolling down.

Timer function:

  • set schedules of turning ON / OFF to any weekdays
  • supports schedules adjusted to dawn/dusk

Mongoose OS-based, free Cloud service and smartphone app of the manufacturer is also available to Shelly 2.5

Built-in web-server, configurable from web-interface via local network. LAN-compatible, controllable via local network without Shelly Cloud and Internet access. Supports MQTT.

Compatible with Google Home and Amazon Echo voice control.

The device operates with a ESP8266 based control, firmware can be modified as you want through the built-in pin-bus (Sonoff-Tasmota, ESPEasy, ESPurna e.g.), can be integrated easily with own automatization server.

Like other smart switches this device has to be connected to phase wire and neutral wire too.

Power supply: 110-230V, 50/60Hz AC, 24 – 60V DC

Peak output: 10A per channel


CE and other certificates and test reports for Shelly smart home devices:

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