RelayFi is a 4-channel smart relay board powered by ESP32-WROOM that has the ability to safely control up to 4 appliances or devices on a load of 110-250 VAC/7A, 30 VDC/10A, and photo-coupling isolation Optocoupler. Users can control their appliances using the third-party app on their electronic devices thanks to RelayFi. It is designed to work under low power consumption i.e. 60milli-Ampere in an ideal state.