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Esp32_relays - EasyEDA open source hardware lab

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ESP32 opto-isolated relay board not working - PC817 opto-isolator

ESP32 Relay x1 | devices.esphome.io

T-Relay-8 - An ESP32 board with 8 relays - CNX Software

ESP32 Custom Board with Relays and Analog Outputs for Home Assistant

AC/DC powered ESP32 Relay Board x4 | devices.esphome.io