Shelly PRO EM-50

Physical

Size (HxWxD): 94x19x69 ±0.5 mm / 3.70x0.75x2.71 ±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

Colour: 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: 100 - 260 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

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