Shelly 1PM Mini Gen3
£16.79
Shelly 1PM Mini Gen3 is a compact single-channel relay for automating lights or small appliances, with power monitoring built in. Small enough to fit behind an existing wall switch or socket, it's designed for retrofit installs without a hub, controlled via the Shelly app, voice assistants, or automation platforms.
- Switches up to 8A at 240V AC (2000W)
- Just 29 x 35 x 16mm, fits behind switches or sockets
- Real-time power metering with free cloud data storage
- Built-in voltage, current and overpower protection cutoffs
Buy the Shelly 1PM Mini Gen3 online in the UK from ShellyUK — genuine Shelly stock with fast UK delivery.
The smallest relay switch in the world for smart control and precise power monitoring. Automate your lights or small electrical appliances in less than 10 minutes and control and monitor them from anywhere. Small enough to fit behind any wall switch or socket, the Shelly 1PM Mini Gen3 can be retrofitted and is highly compatible with your existing smart ecosystem.
Shelly Gen3 devices pack an all new 8MB Shelly ESP Processor, allowing for improved responsiveness, better power efficiency and many more new functions. Shelly ESP processor builds further on the Plus-series ESP-32 devices which already pack an extremely fast processor, quicker connectivity, improved integration, and enhanced safety! You can now add devices easily via Bluetooth connection, using the Shelly Cloud App.
- Equipped with a new processor & increased flash memory - ESP Shelly
- Improved durability of terminals
- Supports up to 8A at 240V AC
- Wi-Fi range extender & Bluetooth gateway
- Precise and real-time power metering with free cloud data storage for analysis and energy usage optimization.
- No hub required! Easy control through the Shelly Smart Control app, most platforms and protocols, as well as voice assistants. Use it with Alexa, Home Assistant or your preferred automation platform
- Supports scripting, webhooks, MQTT, WebSocket, HTTPS, UDP, TLS and custom certificates
Switches up to 8A at 240V AC (2000W)
Just 29 x 35 x 16mm, fits behind switches or sockets

Real-time power metering with free cloud data storage
Built-in voltage, current and overpower protection cutoffs
Where you'd use it
Behind-the-switch retrofit
Fit the 1PM Mini Gen3 inside a cramped switch back box or socket where a full-size relay simply won't fit, so you can add smart control without any new cabling or a bigger pattress.
Appliance load monitoring
Wire it to a single lamp circuit or small appliance and use the real-time power metering to spot which loads are driving up your bill, with the data stored to the cloud for later review.
Wi-Fi and Bluetooth mesh booster
Because it doubles as a Wi-Fi range extender and Bluetooth gateway, deploy one in a weak-signal room to shore up coverage for other Shelly and BLU devices nearby, on top of switching the load it's wired to.
Specification
Connectivity
- Webhooks (URL actions)
- 20 with 5 URLs per hook
- MQTT
- Yes
- Wireless/WiFi Protocol
- 802.11 b/g/n (2.4 GHz)
- Wi-Fi Range (depending on local construction) • up to
- 50m/160ft outdoors • up to 30m/100ft indoors
- Bluetooth Protocol
- 4.2
- Bluetooth Range (depending on local construction) • up to
- 30m/100ft outdoors • up to 10m/33ft indoors
Protection & Safety
- External protection
- 10A, tripping characteristic B or C 6kA interrupting rating Energy limiting class 3
- Voltage protection / Cutoff
- Yes
- Current protection / Cutoff
- Yes
- Max power protection / Cutoff
- Yes
Physical & Build
- (H x W x L)
- 29 x 35 x 16 ±0.5 mm 1.11 x 1.35 x 0.63 ±0.02 in
Environmental
- Humidity
- 30% to 70% RH
Power & Electrical
- Power supply
- 110-240V ±10% 50/60Hz AC
- Max switching voltage
- AC 240V
- Max switching voltage
- DC N/A
- Power consumption < 1.2W
Smart Features
- Power measurement
- Yes
Other
- Max switching current
- AC 8A
- Max switching current
- DC N/A
- Max switching power
- AC 2000W
- Max switching power
- DC N/A
- Clean contact relay
- No
- Internal-temperature sensor
- Yes
- Ambient temperature
- -20°C to 40°C / -5°F to 105°F
- Schedules
- 20
- UDP
- Yes
- Scripting
- Yes
- Frequency
- 2400-2495 MHz
- Max. RF power <20 dBm








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