One potential-free contact per input, - Direct operation on the device for simulating input states and status display via LED per input, - Button on the front of the device for activating and deactivating direct operation and LED for status display of direct operation, - Maintenance-free terminals for connecting and looping through untreated conductors, single-wire, fine-wire and multi-wire, 0.5 to 2.5 mm, - Max. 100 m length of connecting cables for conductors twisted in pairs, - Electronics operated via bus voltage, - Housing: plastic, color RAL 7035 (light gray), N dimension, - Modular device for mounting on TH35 DIN EN 60715 mounting rail, - Protection class: IP 20, - Max. width 4 HP (1 HP = 18 mm)