1. Controls low-level analog signals PhotoMOS feature extremely low closedcircuit offset voltage to enable control of low-level analog signals without distortion. 2. Controls various types of loads such as relays, motors, lamps and solenoids 3. Optical coupling for extremely high isolation Unlike mechanical relays, the PhotoMOS combines LED and optoelectronic device to transfer signals using light for extremely high isolation. 4. Eliminates the need for a counter electromotive force protection d.