This is a very common thyristor module with very low on-resistance and a control voltage, that is compatible with any 3.3V or 5V micro-controller or mechanical switch. This allows you to control high-power devices with very low-power control mechanisms.This board has an optoisolator to protect your micro-controller from high AC currents
Specifications:
3.3V/5V logic AC/DC
AC 220V110V /5A