The ZCMD21M12 is a 12mm solid-state relay manufactured by Schneider Electric. It is a part of the Zelio Control range of relays and provides two channels of electromechanical relay outputs with up to 6A of current. It features a LED display which indicates the current output status, and is able to be controlled by a variety of digital inputs such as pushbutton, selector switch, or external transmitting current or voltage. This device can be used for applications ranging from lighting control to temperature monitoring.