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Shelly PM Mini Gen3 — Compact WiFi Gen3 Power Meter
Shelly PM Mini Gen3 — Compact WiFi Gen3 Power Meter
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Description
Description
Shelly PM Mini Gen3 — Compact Gen3 WiFi Power Meter
The Shelly PM Mini Gen3 (model S3PM-001PCEU16) is a compact, third-generation WiFi power meter, designed for installation in standard wall boxes. It monitors real-time electricity consumption up to 16A (3680W) without interrupting the circuit — it does not act as a relay or cut the power. Gen3 generation with Bluetooth BLE 4.2. No hub or subscriptions required.
Technical Specifications:
- Model: S3PM-001PCEU16
- Connectivity: WiFi 802.11 b/g/n (2.4 GHz) + Bluetooth BLE 4.2
- Power Supply: 110 – 240V AC
- Maximum Current: 16A
- Function: power measurement only (no cutoff relay)
- Operating Temperature: -20 to +40°C
- Dimensions: 34.9 × 29 × 19.2 mm
- Certifications: CE, RoHS
- Protocols: MQTT, HTTP REST API, WebSockets, Webhooks, Scripting (mJS)
Key Features:
- Real-time power measurement: watts, amps, volts, and accumulated kWh
- No relay: monitors without ever interrupting the circuit
- Ultra-compact format (34.9×29×19.2mm): fits into standard wall boxes
- Overconsumption alerts configurable via scripting or automations
- Consumption history integrated into the Shelly app
- Gen3 with OTA updatable firmware
Use Cases:
- Monitoring appliance consumption (washing machine, dishwasher, oven)
- Energy expenditure control in lighting or HVAC circuits
- Energy auditing in homes and small offices
- Integration with Home Assistant for long-term consumption graphs
Compatible with Home Assistant (local, no cloud), Amazon Alexa, Google Home, MQTT, HTTP REST API, and mJS scripting.
Connectivity
Connectivity
- RF Band: 2400 – 2495 MHz
- Max RF Power: <20 dBm
- Wi-Fi Protocol: 802.11 b/g/n
- Wi-Fi Range: Up to 30 m indoors / 50 m outdoors
- Bluetooth Protocol: BLE 4.2
- Bluetooth Range: Up to 10 m indoors / 30 m outdoors
Links of interest
Links of interest
Details:
Connection diagram.
User manual.
Components and APIs
Compliance
Shelly PM Mini Gen3 multilingual EU declaration of conformity.pdf
Shelly Mini PM Gen3 UK PSTI ACT Statement of compliance.pdf
Shelly Mini PM Gen3 x2 UK PSTI ACT Statement of compliance.pdf
Printed user guide
Shelly PM Mini Gen3 multilingual printed user and safety guide.pdf
Shelly PM Mini Gen3 — Compact Gen3 WiFi Power Meter
The Shelly PM Mini Gen3 (model S3PM-001PCEU16) is an ultra-compact Gen3 WiFi power meter. It monitors active power, voltage, current, frequency, and power factor in real-time. It functions as a BLE gateway and WiFi extender. No relay — measurement only. No hub or subscriptions.
Technical Specifications — Shelly PM Mini Gen3
- Model: S3PM-001PCEU16
- Connectivity: WiFi 802.11 b/g/n (2.4 GHz) + Bluetooth BLE 4.2
- Power Supply: 110-240V AC
- Maximum Current: 16A
- Measurement: Power (W), Voltage (V), Current (A), Frequency (Hz), Power Factor
- No Relay: Measurement only — does not directly control the load
- BLE Gateway Function: Yes (Gateway for Shelly BLU devices)
- Operating Temperature: -40°C to +60°C
- Dimensions: 34.9 × 29 × 19.2 mm
- Protocols: MQTT, HTTP REST API, WebSockets, Webhooks, Scripting (mJS)
- Certifications: CE, RoHS
Key Features
- Complete measurement: active power (W), voltage (V), current (A), frequency (Hz), and power factor
- Ultra-compact Gen3 size (34.9×29×19.2mm) — fits in switch boxes or behind any outlet
- Functions as a BLE gateway for nearby Shelly BLU devices
- Integrated WiFi extender to expand smart home network coverage
- mJS scripting for local automations without relying on the cloud
- Non-invasive installation: measures without cutting power to the device
Compatible with
- Home Assistant (local, no cloud)
- Amazon Alexa
- Google Home
- MQTT, HTTP REST API, Scripting mJS
Use Cases
- Monitoring the electricity consumption of any circuit without interrupting power
- Precise measurement of appliances, heaters, or HVAC equipment
- Integration into Home Assistant for advanced energy management and dashboards
- BLE gateway for Shelly BLU devices in areas with poor WiFi coverage
Official Shelly distribution. Shipping from Spain. Official Shelly warranty.
Shelly PM Mini Gen3 - Specifications
| PHYSICAL | ||
|---|---|---|
| Size (HxWxD): | 29x34x16 ±0.5 mm / 1.11x1.34x0.63 ±0.02 in | |
| Weight: | 13 ±1 g / 0.46 ±0.04 oz | |
| Mounting: | Wall box | |
| Screw terminals maximum torque: | 0.4 Nm / 3.5 lbin | |
| Conductor cross section: | 0.2 to 2.5 mm² / 24 to 14 AWG (solid, stranded, and bootlace ferrules) | |
| Conductor stripped length: | 6 to 7 mm / 0.24 to 0.28 in | |
| Shell material: | Plastic | |
| Color: | White | |
| ENVIRONMENTAL | ||
| Ambient 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 VAC | |
| External protection: | 16 A, tripping characteristic B or C, | |
| 6 kA interrupting rating, | ||
| Energy limiting class 3 | ||
| Power consumption: | <1.2 W | |
| OUTPUT CIRCUITS RATINGS | ||
| Max measurement voltage: | 240 VAC | |
| Max measurement current: | 16 A | |
| Max measurement power: | 3840 W | |
| Power measurement: | Forks | |
| Voltage protection / Cutoff: | No | |
| Current protection / Cutoff: | No | |
| Max power protection / Cutoff: | No | |
| RADIO | ||
| RF band: | 2400 - 2495 MHz | |
| Max. RF power: | <20 dBm | |
| Wi-Fi protocol: | 802.11 b/g/n | |
| Wi-Fi Range: | Up to 30 m / 100 ft indoors and 50 m / 160 ft outdoors | |
| (Depends on local conditions) | ||
| Bluetooth Protocol: | 4.2 | |
| Bluetooth Range: | Up to 10 m / 33 ft indoors and 30 m / 100 ft outdoors | |
| (Depends on local conditions) | ||
| MCU | ||
| CPU: | ESP-Shelly-C38F | |
| Flash: | 8 MB | |
| FIRMWARE CAPABILITIES | ||
| Webhooks (URL actions): | 20 with 5 URLs per hook | |
| MQTT: | Forks | |
| UPD: | Forks | |
| Scripting: | Forks | |
