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This article introduces how to automatically control a boiler heater using a Wi-Fi SCR module (SCR_485) and an IAMMETER power meter to improve the self-consumption rate of a photovoltaic (PV) system.

By adjusting the output power of the SCR module in real-time according to the grid power feed-in, it aims to consume as much feed-in power as possible and enhance the self-consumption rate of the PV system.

Previously, we had a tutorial that taught you how to use a Wi-Fi SCR module with ESP Home firmware to linearly adjust the power output of resistive loads. For more details, please refer to the following link: ESP32 + SCR module: Linearly adjust the power output of resistive loads, such as heaters.