The analogue addressable input module for DIN rail mounting (R) monitors the status of one or more potential-free con-tacts and reports their status to the fire alarm control panel. The optional function (interrupt) enables participation in a quick alarm query, similar to manual call points. The states „quiescent“, „pre-alarm“, „alarm“ and „fault“ can be recognized. The module is intended for operation with fire alarm control panels via Loop AP protocol. Addressing is done via DIP switches, the address can also be changed after installation. The electronics have integrated isolators.