🔌 Shelly 1PM Mini Gen4 – Compact Smart Relay with Power Metering
Shelly 1PM Mini Gen4 is a one-channel smart switch with built-in power metering, packed into an ultra-compact form factor. With a size reduced by 35% compared to the Plus series, it fits perfectly into tight spaces like wall boxes, power outlets, or even directly inside appliances.
✅ Multi-protocol connectivity – Wi-Fi, Bluetooth, Zigbee, and Matter
📏 Ultra-compact design – perfect for narrow or crowded wall boxes
⚡ Power metering – real-time monitoring of power and energy usage
📶 Built-in Bluetooth – quick device inclusion via the Shelly Cloud app
🕒 Smart scheduling – based on custom times or sunrise/sunset
📲 Custom scenes – create automation routines with other Shelly devices
🔐 Advanced security – supports MQTT, TLS, HTTPS, Webhooks, and more
🧠 Wide compatibility – works with Alexa, Google Home, Android, iOS
🧩 Full control – local or cloud-based through the Shelly Smart Control app
📦 Ideal for installation in:
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narrow switch boxes (e.g., Danish format)
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inside electrical appliances
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overcrowded junction boxes
⚙️ Technical Specifications
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Dimensions: 29 x 34 x 16 mm
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Weight: 18 g
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Mounting: In-wall box
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Housing material: Plastic (red)
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Operating temperature: -20°C to 40°C
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Humidity: 30% – 70% RH
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Max altitude: 2000 m
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Power supply: 110–240 V AC / 24–30 V DC
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Power consumption: <1.2 W
🔌 Electrical Features
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Relay: NO contact, 1-pole, µ contact
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Max switching voltage: 240 V AC
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Max switching current: 8 A (AC)
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Max switching power: 2000 W
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Power metering: ✔️
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Protections: overvoltage, overcurrent, overpower, internal temperature sensor
📡 Connectivity
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Wi-Fi: 802.11 b/g/n (2.4 GHz), up to 50 m outdoors / 30 m indoors
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Bluetooth 4.2: up to 30 m outdoors / 10 m indoors
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Zigbee: IEEE 802.15.4
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RF power Wi-Fi: < 20 dBm
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RF power Bluetooth: < 4 dBm
💾 Processor & Capabilities
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CPU: ESP32-C3
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Flash memory: 4 MB
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mjS Scripting: ✔️
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MQTT, UDP, Webhooks: ✔️
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Schedules: up to 20
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Webhooks: up to 20 with 5 URLs per action
💡 Shelly 1PM Mini Gen4 – Small in size, big on functionality!