ESP-Shelly-C38F Microcontroller – Technical Specifications CPU: ESP-Shelly-C38F Flash Memory: 8 MB Power Supply: 110-240V ~ 24-30V AC Power Consumption: < 1.2W Maximum Voltage Control: 110-240V~24-48V AC ±12V AC ± Maximum Switching Voltage: 240V ~ 30V AC Maximum Switching Current: 16A (at 240V~) 10A (at 30V AC) Internal Temperature Sensor: Yes Voltage Meter (AC): Yes Current Meter (AC): Yes Communication: WiFi 2.4 GHz & Bluetooth 4.2 Mounting: Wall-Mounted Material: Plastic Operating Temperature: -20°C to 40°C / -5°F to 105°F Humidity: 30% to 70% Relative Humidity Range: Up to 10m indoors and 30m outdoors Webhooks: 20 with 5 URLs WiFi Range Extender: Yes Footer: Yes TMTQ: Yes Encryption: Yes Dimensions: 37 x 42 x 16 mm Weight: 27 g