The ER series I/O modules feature die-cast zinc housings and can be used in harsh industrial and process environments. The IP67-rated modules are fully compatible with the EP series EtherCAT Box line and offer the same I/O selection: digital inputs with various filters, digital outputs with 0.5-A output current and “combination modules” with freely configurable digital inputs or outputs. Analog input modules for current/voltage measurement are available. Temperature measurement modules, serial interfaces, encoder inputs and motion modules supplement the range. The series’ space-saving 30-mm modules and 60-mm-wide modules are available in several channel variations.