Shelly EM Mini Gen4 WiFi Zigbee Energy Meter 16A

The Shelly EM Mini Gen4 is a very compact, single-phase energy meter with WiFi, Bluetooth, and Zigbee in one housing. It measures the active current, voltage, active power, and active energy directly at the load and sends the values in real time to the Shelly Cloud, MQTT, webhooks, or locally to Home Assistant. The current sensor is internally integrated, so an external clamp or a current transformer is not required. With dimensions of approximately 29 × 34 × 16 mm, the device also fits into small flush-mounted boxes directly behind a switch or socket. As a multi-protocol device, the EM Mini Gen4 supports WiFi 802.11 b/g/n/ax, as well as Matter and Zigbee, allowing it to also serve as a BLE gateway and WiFi range extender. By pressing the button five times, you can switch between Matter and Zigbee mode. The maximum current is 16 A at 110 to 240 V AC, which corresponds to a maximum of 3840 W. The measurement accuracy for current and voltage is ±1% each. The device features an ESP-Shelly-C68F multi-protocol module with 8 MB Flash. Own mJS scripts, schedules, webhooks, and KVS variables allow sophisticated automations directly on the device. Through the integrated web interface, the Shelly Smart Control App, or via RPC-API, energy data can be exported as CSV or JSON. The EM Mini Gen4 is particularly suitable for monitoring the consumption of individual circuits such as wall boxes, heat pumps, dishwashers, or server racks.

Features:

• Multi-protocol wireless operation with WiFi, Bluetooth 5, and Zigbee makes the device a versatile data and gateway node
• Internal 16-A shunt sensor allows measurement directly in the load circuit without an external CT clamp
• Real-time measurement of active power and active energy with ±1% accuracy for current and voltage
• Built-in script engine mJS supports own logic, schedules, and webhooks directly on the device
• Data export via RPC-API, MQTT, WebSocket, and CSV allows easy integration into Home Assistant and other systems
• Compact format of 29 × 34 × 16 mm fits into almost any Swiss flush-mounted box

Application Examples:

• Consumption measurement of a heat pump or wall box directly in the connection box
• Sub-metering of individual circuits such as servers, refrigerators, or workshop machines
• Bluetooth gateway for Shelly BLU sensors in a room without other hubs
• Energy monitoring in Home Assistant via MQTT or Matter with historical consumption data
• Local threshold logic via mJS script, for example, to send a webhook when a power limit is exceeded

Documentation:

• Shelly Knowledge Base
• Shelly Forum

Technical Data:

• Manufacturer: Shelly (Allterco Robotics)
• Manufacturer SKU: S4EM-001PXCEU16
• EAN: 3800238070823
• Radio standards: WiFi 802.11 b/g/n/ax (2.4 GHz), Bluetooth 5.0, Zigbee (IEEE 802.15.4), Matter
• Chip: ESP-Shelly-C68F with 8 MB Flash
• Supply voltage: 110 to 240 V AC, 50/60 Hz
• Maximum current: 16 A
• Maximum power: 3840 W
• Own consumption: < 1 W
• Measurement accuracy current: ±1%
• Measurement accuracy voltage: ±1%
• Terminals: Screw terminals, 0.5 to 4 mm², max. 0.4 Nm
• Number of channels: 1 channel, single-phase
• Recommended fuse: Type B or C, max. 16 A, min. 6 kA
• Controls: 1 reset/pairing button, 1 LED
• Interfaces: HTTP-API, MQTT(s), WebSocket, UDP, Webhooks, embedded web interface
• Scripting: mJS Shelly Script Language, KVS, Schedules
• Cloud and local integration: Shelly Cloud, Home Assistant, Matter, Zigbee2MQTT, ZHA
• Operating temperature: -20 °C to +40 °C
• Humidity: 30% to 70% rH
• Maximum operating altitude: 2000 m
• Housing: Plastic white, terminals mouse gray
• Product dimensions: 29 × 34 × 16 mm
• Product weight: 13 g
• Packaging dimensions: 50 × 80 × 25 mm
• Gross weight: 29 g

Scope of Delivery:

• 1× Shelly EM Mini Gen4
• 1× User and Safety Manual