Specifications Quantity Value Physical Size (HxWxD): 37x42x16 / 1.46x1.65x0.63 Weight: 27 g / 0.95 oz Screw terminals max 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 Mounting: Wall console Shell material: Plastic Shell color: Red Terminal Color Black Environmental Ambient working 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 V~ 24-30 V? Power consumption: < 1.2 W External protection: Cable protection switch in accordance with EN60898-1 (tripping characteristic B or C, max. 16 A rated current, min. 6 kA interrupting rating, energy limiting class 3) Output circuits ratings Max. switching voltage: 240 V~ 30 V? Max. switching current: 16A (240 V~) 10A (30 V?) Sensors, meters Internal-temperature sensor: Yes Voltmeter (AC): Yes Ammeter (AC): Yes Radio Wi-Fi Protocol: 802.11 b/g/n RF band: 2401 - 2483 ?Hz Max. RF power: < 20 dBm Range: Up to 30 m / 100 ft indoors and 50 m / 160 ft outdoors (Depends on local conditions) Bluetooth Protocol: 4.2 with BLE RF band: 2400 - 2483.5 MHz Max. RF power: < 4 dBm Range: Up to 10 m / 33 ft indoors and 30 m / 100 ft outdoors (Depends on local conditions) Microcontroller unit CPU: ESP-Shelly-C38F Flash: 8MB Firmware capabilities Schedules: 20 Webhooks (URL actions): 20 with 5 URLs per hook Scripting: Yes MQTT: Yes