The LON module with 4 digital inputs was developed for decentralized switching tasks. It is suitable for detecting potential-free switch states, e.g. electrical limit switches on ventilation flaps or auxiliary contacts on power contactors. The input terminals 1 to 4 are connected to terminals C2 using potential-free switches or contacts. The inputs can be queried individually or as a whole using network variables SNVT. Suitable for decentralized installation on TH35 mounting rails in accordance with IEC 60715 in electrical distribution boards. Connection with screw terminals