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These opto-isolated 5V relay modules let your microcontroller safely switch mains voltage loads up to 250 V AC / 10 A. Each channel uses a dedicated optocoupler to protect the control circuit from high-voltage transients.
Compatible with Arduino, ESP32, ESP8266, and Raspberry Pi. Active-LOW control signal, 5 V coil. Available in 1, 2, 4, and 8 channel configurations for any automation task.