Shelly EM Mini Gen4 Smart Energy Meter with Wi-Fi Zigbee Matter 16A
The Shelly EM Mini Gen4 is an ultra-compact smart energy meter designed for real-time power monitoring of electrical devices and appliances up to 16A at 240V AC. Measuring just 29 × 34 × 16mm, this tiny powerhouse fits behind wall switches, outlets, or inside electrical panels where space is at a premium. Enhanced with multi-protocol connectivity including Wi-Fi, Zigbee 3.0, Bluetooth, and Matter certification, the EM Mini Gen4 integrates seamlessly with Home Assistant, Apple HomeKit, Google Home, Amazon Alexa, and SmartThings, giving you complete control over your energy usage and electricity costs.
Why You'll Love the Shelly EM Mini Gen4
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Ultra-Compact Design: At just 29 × 34 × 16mm, it fits virtually anywhere standard devices cannot
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Multi-Protocol Connectivity: Supports Wi-Fi, Zigbee 3.0, Bluetooth, and Matter for universal smart home compatibility
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Accurate Energy Monitoring: Tracks active power, voltage, current, and energy consumption in real-time up to 16A / 3840W
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Gen4 Performance: Improved processor and 8MB memory for faster response and enhanced stability
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No Hub Required: Connects directly to your Wi-Fi network; Zigbee support available for mesh networking
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BLE Gateway Function: Bridges Shelly BLU battery-powered sensors to your wider smart home ecosystem
Professional Energy Monitoring in a Micro Form Factor
The Shelly EM Mini Gen4 is engineered for professional integrators and energy-conscious homeowners who need precise, real-time insights into electrical consumption. Unlike relay-based smart switches, this device is a dedicated energy meter with no switching capability, ensuring safe, continuous monitoring of critical circuits such as HVAC systems, refrigeration, EV chargers, and high-draw kitchen appliances. The device stores energy data at one-minute intervals locally and syncs to the cloud when available, so you never lose vital consumption history even during network outages.
Seamless Smart Home Integration
With full Matter certification and multi-protocol support, the EM Mini Gen4 works with virtually any smart home platform. Control and monitor via the Shelly Smart Control app on iOS and Android, or integrate with Home Assistant, Apple HomeKit, Google Home, Amazon Alexa, and Samsung SmartThings. The device supports MQTT, HTTP, WebSocket, and TLS-secured connections, making it ideal for custom automation scenarios, cost-tracking dashboards, and energy-aware smart scenes. The embedded web interface provides local access for configuration and real-time monitoring without cloud dependency.
Advanced Firmware & Scripting
The EM Mini Gen4 inherits the flexibility of Shelly's acclaimed Gen4 firmware, including full support for mJS scripting to create custom features, triggers, and automation logic. Set up smart scenes to turn off appliances during peak tariff periods, receive alerts when consumption spikes unexpectedly, or trigger automations based on real-time power draw. With an upgraded processor and enhanced memory, command execution and feedback are faster than ever.
Where to Install the Shelly EM Mini Gen4
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Behind wall outlets and switches: Monitor lighting circuits, plug loads, or dedicated appliance outlets
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Inside electrical panels: Track energy use of individual breaker circuits in tight spaces
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Kitchen and laundry rooms: Monitor high-draw appliances like ovens, refrigerators, washing machines, and dryers
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HVAC and climate control: Track heating, cooling, and ventilation system consumption
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EV charging circuits: Measure energy delivered to electric vehicle chargers
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Commercial and rental properties: Sub-meter tenant usage or individual equipment for billing and energy management
Safety & Installation
The Shelly EM Mini Gen4 features internal temperature sensing and reporting to monitor device health. For safe operation, it is recommended to use external circuit protection such as a 16A circuit breaker with tripping characteristic B or C (minimum 6kA interrupting rating, energy limiting class 3). The device operates in ambient temperatures from -20°C to 40°C and is rated for 110-240V AC mains voltage. Installation should be performed by a qualified electrician in accordance with local electrical codes.
Network Extender & BLE Gateway
Thanks to its multi-protocol chipset, the EM Mini Gen4 can act as a Wi-Fi and Zigbee range extender, strengthening network coverage in dense or radio-challenged environments. The built-in BLE gateway allows you to integrate Shelly BLU sensors and other Bluetooth devices, forwarding sensor data to the cloud or your local smart home controller without needing a separate hub.
What's in the Box
- Shelly EM Mini Gen4 energy meter
- User and safety guide
Full Specifications
Electrical
| Mains Voltage |
110-240V AC |
| Max. Measurement Voltage |
240V AC |
| Max. Measurement Current |
16A |
| Max. Measurement Power |
3840W |
| Switching Capability |
None (energy meter only, no relay) |
| External Protection Required |
16A circuit breaker, characteristic B or C, min. 6kA interrupting rating, energy limiting class 3 |
Connectivity
| Protocols |
Wi-Fi, Zigbee 3.0, Bluetooth, Matter |
| Wi-Fi Standard |
802.11 b/g/n/ax (Wi-Fi 6), 2.4GHz |
| Wi-Fi Range (Outdoors) |
Up to 50m / 160ft |
| Wi-Fi Range (Indoors) |
Up to 30m / 100ft |
| Bluetooth Range (Outdoors) |
Up to 30m / 100ft |
| Bluetooth Range (Indoors) |
Up to 10m / 33ft |
| Network Protocols |
MQTT, HTTP, WebSocket, TLS (all inbound connections) |
| BLE Gateway |
Yes (for Shelly BLU devices) |
Performance & Monitoring
| Measurement Parameters |
Active Power, Voltage, Current, Energy Consumption |
| Data Logging Interval |
1-minute intervals |
| Processor |
Gen4 advanced processor with 8MB memory |
| Scripting Support |
mJS (JavaScript) for custom features and automation |
| Internal Monitoring |
Temperature sensing and reporting |
Physical & Environmental
| Dimensions (H × W × L) |
29 × 34 × 16mm ±0.5mm / 1.14 × 1.34 × 0.63in |
| Operating Temperature |
-20°C to 40°C / -5°F to 105°F |
| Mounting |
Behind outlets, switches, or in electrical panels |
Compatibility & Integration
| Smart Home Platforms |
Home Assistant, Apple HomeKit (via Matter), Google Home, Amazon Alexa, Samsung SmartThings |
| Control App |
Shelly Smart Control (iOS & Android) |
| Embedded Web Interface |
Yes (local network access) |
| Cloud Services |
Shelly Cloud with remote access |
| Matter Certification |
Yes |
Regulatory & Warranty
| Compliance |
CE, RoHS, EU Directives 2014/53/EU, 2014/35/EU, 2014/30/EU, 2011/65/EU |
| Device Model |
S4EM-001PXCEU16 |
| Manufacturer |
Shelly Europe Ltd. |
| Warranty |
3 years on Gen4 devices |
Specifications are sourced from the manufacturer product page and may be updated.
