Remote Socket with Power Measuring

Project Overview

The Remote Socket is a highly flexible AC load control board designed to integrate into smart home environments. It offers safe control over mains-powered appliances like lamps, shades, and heating loads up to medium current draw.

Beyond simple relay switching, the board features an integrated current sensor and power metering IC that transmits live power consumption metrics over MQTT to Home Assistant for automation scripting and energy tracking.

Design highlights include mains-rated relay selection, snubber networks and transient suppression, optocoupler isolation between the high-voltage switching domain and low-voltage control electronics, and a metering front-end that reports active and apparent power. Firmware supports MQTT-driven scheduling, manual local override, and safety checks such as overcurrent reporting and automatic shutoff when thresholds are exceeded.