M5Stack 2-Channel SPST Relay Unit is a 2-channel SPST relay module that is equipped with two high-current relays. These current relays work under AC-250V/DC-28V @ 8A and each relay adopts independent IO control and status indicator LED. The 2Relay unit comes with one 20cm HY2.0-4P cable and two VH3.96-4P plug terminals. Typical applications include AC/DC signal switching and digital equipment power on and off.