E804 is a DIN rail I/O module for digital inputs suitable for acquiring 4 digital signals from dry contact. It’s equipped with a RS485 Modus RTU serial output that allows you to remotely monitor the status of the inputs and the 4 available relay outputs, also allowing the activation of these. E804 is the ideal tool for acquiring 4 digital signals and returning them to acquisition devices such as PLC, HMI, industrial PC and enabling 4 relay outputs by the serial interface. The 230V 10A relay outputs allow to interface directly with small loads. It’s also possible to set a delay time of the outputs on restart and a delay time between the restart of the various outputs.