The EP1816-0003 EtherCAT Box with digital inputs acquires the binary control signals from the process level and transmits them, in an electrically isolated form, to the controller. The state of the signals is indicated by light emitting diodes. For the signal connection connectors with a spring-loaded system are used, optionally available with 1 or 3?pins. The compact plugging level enables the EP1816-0003 to transfer sixteen signals from the field via EtherCAT in a minimum of space. ? The sensors are supplied from the box supply voltage US. The auxiliary voltage UP is not used in the input module, but may be connected in order to be relayed downstream. The module is supplied without connectors.