I2C Relay module with selectable address for use with the ESP-12E I2C Base Board

This is a dual relay module originally designed to be used together with the ESP-12E I2C Base Board. It features a selectable I2C address switch, as well as optical isolation between the I2C IO Expander and the relays. Isolation cutouts on the relay contacts also make it safer to use for mains voltage switching. Unused IO Expander pins are all broken out to a header on the top of the unit, to make it possible to interface additional devices to the same card. An LDO regulator is used to step down the 12v input voltage to 5v for use with the relays and other circuitry. Well manufactured, Thank you





Jul 22,2022
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