MCC21-16io8B is a solid-state power controller manufactured by IXYS Corporation. It is a 16-channel, isolated-output, open-drain, optically-isolated power control module designed to provide on/off control of multiple circuits with a single voltage source. The module operates using a 4-20mA or 0-10V analog control, or an external digital signal. Features of the module include a wide operating temperature range and 16 independent solid-state outputs with over-temperature and over-current protection. The MCC21-16io8B is suitable for controlling a variety of high-current DC and AC devices, including motors, lamps, light-emitting diodes, and solenoids, in industrial and commercial applications.