The 189X20 part of Dremec is a universal controller module that can be used to control AC motors, DC motors, LED lights, relays and other electronics. It can be used in combination with a wide range of actuators, sensors and PLCs. It has multiple channels, allowing it to control large amounts of actuators. The 189X20 is a small, lightweight device that is easy to install and program. It includes a variety of communication protocols, including I2C, SPI, Modbus and CAN. It also has a range of safety features, such as overvoltage and reverse-polarity protection. The device can be programmed and monitored remotely, over a secure Ethernet connection.