The Modbus module with 4 digital inputs and 2 relay outputs with manual operating level was developed for decentralized switching tasks. Suitable for e.g. to record light switches and window contacts in one room and to switch 2 light bands or to switch as shutter control. 2 motorized fire dampers can also be controlled. In this case, the relay contacts must be protected by suitable load-dependent measures. The inputs can be operated as contact or voltage inputs. Via a Modbus master, the inputs and outputs can be switched and queried via standard registers. The settings of the module address, the bit rate and the parity are made by 2 switches on the front or by software. Suitable for decentralized mounting in series sub-distribution. Connection with spring clamps (Push-In).This text is machine translated.