Shelly Mini EM Gen4

The Shelly Mini EM Gen4 is a compact smart energy meter designed to fit inside existing electrical devices, tracking their power consumption with precision. Part of Shelly’s Mini range, it’s small enough for tight junction boxes or light fittings. Along with WiFi and Bluetooth support from the Gen3 model, the Gen4 also adds native Zigbee and Matter compatibility for easy integration into modern smart home systems.

£17.48 inc VAT

SKU: MINI-EM-GEN4 Category:

Compatibility

Shelly Mini EM Gen4 is compatible with the following systems:
Zigbee CompatibleWi-Fi Compatible DeviceMatter Compatible

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Description

The Shelly Mini EM Gen4 is Shelly’s most compact energy‑monitoring device yet, and the first EM model introduced within the Mini series. Its small footprint and simple wiring make it ideal for retrofitting into existing installations; whether behind light switches, inside appliances, or integrated into lighting and heating systems.
Once installed, it measures the energy consumption of the connected device or system every 60 seconds with up to 1% accuracy. Both easy to use and highly customisable, the Mini EM Gen4 provides a comprehensive, real‑time overview of energy usage across your home or workplace.

Like the rest of the Gen4 lineup, the Mini EM Gen4 includes built‑in Wi‑Fi and Bluetooth for seamless, hub‑free integration with the free Shelly app and other Shelly devices. New to the Gen4 series is native support for Zigbee and Matter, enabling instant adoption into existing Zigbee or Matter networks. Gen4 devices can maintain multiple connections simultaneously, such as staying linked to a broader Zigbee mesh while also communicating with the Shelly ecosystem over Wi‑Fi.

Every Gen4 device, including the Mini EM Gen4, features an upgraded chipset and expanded RAM for improved performance, faster operation, and more advanced scripting options, offering a wider range of automation and customisation possibilities.

Key features:

  • Built-in WiFi; no hub required
  • Bluetooth connectivity
  • Embedded web server for local management
  • Power metering
  • Smart schedules
  • Smart scenes

What’s included:

  • 1 x MINI-EM-GEN4
  • 1 x Installation Guide

Product Specifications

Physical and Performance Attributes

Weight13 grams
Dimensions (L x W x H)29 × 34 × 16 mm

Misc Product Attributes

Physical
Size (HxWxD) 29x34x16 mm / 1.14×1.34×0.63 in
Weight 13 g / 0.46 oz
Screw terminals max torque 0.4 Nm / 3.5 lbin
Conductor cross section 0.5 to 4 mm² / 20 to 11 AWG (solid, stranded, ferrules)
Conductor stripped length 6 to 7 mm / 0.24 to 0.28 in
Mounting Wall console
Shell material Plastic
Shell color White
Terminals color Grey (Mouse Grey)
Environmental
Ambient working temperature -20 °C to 40 °C / -5 °F to 105 °F
Humidity 30% to 70% RH
Max. altitude 2000 m / 6562 ft
Electrical
Power supply 110–240 V~
Power consumption < 1 W
External protection Characteristic B or C, max 16A, min 6 kA interrupting, class 3
Sensors & Meters
Voltmeter (AC) 110–240 V~ 50/60 Hz
Voltmeter accuracy ±1%
Ammeter (AC) 0–16 A
Ammeter accuracy ±1%
Power & energy meters Active power, Active energy
Measurement data storage ≥10 days @ 1 min resolution
Data export CSV for PQ values, JSON via RPC
Output Circuits Ratings
Power measurement Yes
Max. measurement voltage 240 V~
Max. measurement current 16 A
Max. measurement power 3840 W
Radio — Wi‑Fi
Protocol 802.11 b/g/n/ax
RF band 2412–2472 MHz
Max RF power < 20 dBm
Range Up to 30 m / 100 ft indoors; 50 m / 160 ft outdoors
Radio — Bluetooth
Protocol 5.0
RF band 2402–2480 MHz
Max RF power < 4 dBm
Range Up to 10 m / 33 ft indoors; 30 m / 100 ft outdoors
Radio — Zigbee
Protocol 802.15.4
RF bands 2400–2483.5 MHz
Max RF power < 20 dBm
Range Up to 100 m / 328 ft indoors; 300 m / 984 ft outdoors
Microcontroller
CPU ESP‑Shelly‑C68F
Flash 8 MB
Firmware Capabilities
Schedules 20
Webhooks 20 hooks, 5 URLs each
Scripting Yes
MQTT Yes
UDP Yes
Advanced schedules Yes
KVS (Key‑Value Store) Yes