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Two tiny white rectangular relay modules with screw terminals side by side

Shelly

Shelly 1PM Mini Gen3 2-pack relay

SKU CH-M81N-N3KT9

Two compact Wi-Fi and Bluetooth relays with power metering automate lights or small appliances in under 10 minutes and fit behind most wall switches

  • Parts2 Years

Pack 2-pack

  • Single
  • 2-pack

Struck-through versions exist but are not stocked here.

  • Automate lights in under 10 minutes with compact retrofit fit
  • Monitor real-time energy usage with precise metering and free cloud storage
  • Control via Alexa, Home Assistant and major platforms without a hub
  • 35% smaller than Plus devices while keeping full performance
  • Handles up to 8 A at 240 VAC with durable terminals

Compact Smart Relay 2-pack

The Shelly 1PM Mini Gen3 2-pack provides two single-channel Wi-Fi and Bluetooth smart relay switches rated at 8 A for 240 VAC circuits. Each unit fits behind standard wall switches or sockets to automate lights and small appliances in under ten minutes. No separate hub is required; control and monitoring are handled through the Shelly Smart Control app or supported third-party platforms.

Retrofit Build and Connectivity

The housing is 35% smaller than Shelly Plus devices, allowing installation in tight wall boxes without sacrificing the 8 A switching capacity or improved terminal durability. Built-in Wi-Fi range extension and Bluetooth gateway functions keep the mesh responsive, while open API access supports MQTT, WebSocket and HTTPS for custom integrations. The compact form factor makes retrofitting existing wiring straightforward for most residential setups.

Upgrade Path and Limits

These relays replace basic mechanical timers or non-metered smart switches when accurate real-time power monitoring and free cloud data storage are needed. The jump is worthwhile for users who want per-circuit energy visibility and broad ecosystem compatibility without a central hub. Buyers who require higher current loads, multi-channel switching or wired Ethernet connectivity will need a different device class.

Highlights

  • Automate lights in under 10 minutes with compact retrofit fit
  • Monitor real-time energy usage with precise metering and free cloud storage
  • Control via Alexa, Home Assistant and major platforms without a hub
  • 35% smaller than Plus devices while keeping full performance
  • Handles up to 8 A at 240 VAC with durable terminals

Specifications

Parts2 Years

Questions about this item

What load does the 240 VAC rating cap the relay at?

The relay is rated for up to 8 A at 240 VAC, so the practical limit is 8 amperes on a 240-volt circuit.

What space is needed behind a wall switch to fit this relay?

The device is 35% smaller than Shelly Plus models, designed to fit behind most standard wall switches and sockets for retrofit installations.

How is the relay paired during setup, and what step is often missed?

Pairing is done through the Shelly Smart Control app using Wi-Fi and Bluetooth; the step users often miss is completing the cloud registration after local pairing.

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