Shelly EM Mini Gen4
Wires into the circuit it measures · Electrician install
In stock · Ships in 1 to 2 business days
Choose options
Which appliance is driving the power bill?
Clamp the Shelly EM Mini Gen4 CT around the circuit for the hot water, air con or pool pump and see its draw and daily kWh in the app. No rewiring of the load. Diagram: Shelly.
2 appliances to watch at once?
The Shelly EM Mini Gen4 with a clamp on each circuit: see both loads separately in the app and get notified if one is left running. Diagram: Shelly.
Small inverter or micro-inverter: want to see what it is actually producing?
Feed the inverter output through the Shelly EM Mini Gen4 and the meter shows generation live in the app, with history by hour and day. A cheap way to prove a small solar setup is pulling its weight. Diagram: Shelly.
Key features
Direct single-phase metering: measures the wired circuit; no external CT clamp needed.
±1% accuracy: active power and energy across 110 to 240 V, 0 to 16 A.
Tiny footprint: 29 × 34 × 16 mm; fits behind sockets and in wall boxes.
Wi-Fi, Bluetooth, Zigbee and Matter built in: pick the protocol that suits the site.
No hub, no cloud required: local web interface, scripting and MQTT.
Works with
Apple Home
via Matter
Home Assistant
Matter
Shelly Smart Control app
MQTT
About this product
The Shelly EM Mini Gen4 is a tiny single-phase energy meter that wires directly into the circuit it measures, no clamp needed: reporting active power and energy with ±1% accuracy across 110 to 240 V and 0 to 16 A.
At 29 × 34 × 16 mm it fits the same tight spaces as the Mini relays, behind a socket or inside a wall box, so it can be added to an existing circuit for consumption monitoring without a switchboard rebuild. Gen4 brings 4 radios: Wi-Fi, Bluetooth, Zigbee and Matter, so it joins whichever ecosystem the site runs.
It's a metering device only. It doesn't switch the load. It runs standalone through its local web interface with scripting, schedules and MQTT, no hub required.
Model: S4EM-001PXCEU16
230 V wiring at the metered circuit: licensed electrician required; neutral needed. Measures directly (no CT clamp).
Tech specs
Physical
| Model | S4EM-001PXCEU16 |
| Dimensions | 29 × 34 × 16 mm |
| Mounting | In-wall (wall console) |
Electrical
| Max load | 16 A |
| Power consumption | < 1 W |
| Power monitoring | Yes |
| Operating temperature | -20 °C to 40 °C |
Connectivity
| Wi-Fi | 802.11 b/g/n/ax |
| Bluetooth | 5.0 |
| Zigbee | 802.15.4 |
Compatibility
| Compatibility notes | Metering device only: does not switch loads. Measures directly up to 16 A; no external current transformer required. Works with Apple Home. |
Warranty
| Manufacturer warranty | 3 Years |
| Free Ohmly extension | +1 Year Free Ohmly Warranty |
