Microcontroller based Handheld Dual Channel Circuitry for Electrotherapy has 15 minutes built-in timer. Microcontroller Based Circuitry is equipped with six pre-programmed output modes that can be selectable by a soft touch key. Microcontroller Based Circuitry operates by battery/ mains. Microcontroller based Handheld Dual Channel Circuitry for Electrotherapy offers the facility for separate intensity control for both channels.