The ADAM-6066-CE is a 4-channel Isolated Digital Input and Output Module from Advantech. It is used to control and monitor digital inputs, such as push buttons and switches, as well as outputs, such as LEDs and relays. This device includes four channels of optically coupled digital inputs, each capable of accepting both logic level (5-24 VDC) or switching contact input. Additionally, it provides four channels of digital outputs, with each able to handle 500mA of load current. The ADAM-6066-CE module offers a wide range of features including built-in surge protection, noise protection, and 2500 VDC intra-module isolation.