Shelly Pro EM - 50
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Wi-Fi Energy Meter with Contactor Control
Shelly Pro EM-50 is a DIN rail mountable two-channel, single-phase energy meter. It has an integrated switch with dry contacts for contactor control.
KEY FEATURES
- LAN, Wi-Fi and Bluetooth connection for high security and reliability
- Reports accumulated energy, as well as instantaneous voltage, current, active and apparent power per phase in real time
- Power metering – two independent measurement channels on the same phase
- 4 Quadrant measurement with optical pulse indication of energy usage
- Can be used with contactors for bigger loads
- Accuracy Class B (IEC 62053-21)
- Photovoltaic ready
- Stores data in non-volatile memory that can be retrieved for a period of up to 60 days in 1-minute intervals.
- No hub required! Easy control through the Shelly Smart Control app, most platforms and protocols, as well as voice assistants. Use it with Alexa, Home Assistant, or your preferred automation system.
- Supports scripting, webhooks, MQTT, WebSocket, HTTPS, UDP, TLS and custom certificates & Modbus TCP protocol
SPECIFICATIONS
Physical | |
---|---|
Size (HxWxD): | 94x19x69 ±0.5 mm / 3.70×0.75×2.71 ±0.02 in |
Weight: | 63 ±1 g / 2.22 ±0.05 oz |
Mounting: | DIN rail |
Screw terminals max torque: | 0.4 Nm / 4.43 lbin |
Conductor cross section: | 0.5 to 2.5 mm² / 20 to 14 AWG (solid, stranded and bootlace lugs) |
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 voltage AC: | 110 – 240 V, 50/60 Hz |
Power supply voltage DC: | N/A |
Power consumption: | < 3 W |
Output circuits ratings | |
Max switching voltage AC: | 240 V |
Max switching voltage DC: | N/A |
Max switching current: | 2 A |
Sensors, meters | |
Internal-temperature sensor: | Yes |
Voltmeter (RMS): | 100 – 260 V |
Voltmeters accuracy: | ±1 % |
Ammeters (RMS via CT): | 0 – 50 A |
Ammeters accuracy: | ±1 % (5 – 50 A), ±2 % (0 – 5 A) |
Power and energy meters: | Active and apparent power |
Active and apparent energy | |
Power factor | |
No load threshold: | 30 VA per phase |
Measurement data storage: | At least 60 days of 1 min data resolution |
Data export: | CSV for PQ recorded values |
JSON format export through RPC | |
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: | ESP32-D0WDQ6 |
Flash: | 16 MB |
Firmware capabilities | |
Webhooks (URL actions): | 20 with 5 URLs per hook |
Scripting: | Yes |
MQTT: | Yes |
CoAP: | No |