Enerna IoTech WiFi 4P smart overload circuit breaker switch support three phase 4 pole overload short circuit control. It based on Tuya platform, can linkage to other smart device such as smart power energy meter to work together. The wireless function as below:Intelligent smartphone app and voice remote control; Preset on/off time schedule of the switch via the App; Device sharing control to family members and friends; Home appliance overload and short circuit protection; Electricity records self-checking.