The CircuitSetup Split Single Phase Energy Meter is an affordable, accurate remote energy monitoring device for your entire home. It monitors energy usage in real time, independent of power company meters, and can be easily connected to any wireless microcontroller (such as ESP8266 or ESP32) to transmit energy data to programs such as EmonCMS. It can also be used to monitor solar systems to track the amount of electricity you generate from the sun. It uses a secure current transformer clamp to sample current - no AC wiring required.