If you want to connect a detector to the CFox module located in the flush box (e.g. directly under the detector), a variety of modules with double balanced inputs is available, such as the C-IT-0200S module. Here you have to provide a 12 V power supply for the detectors, unlike with the C-WG-0503S module, which itself provides both 12 VDC and processing of two balanced loops, and can also be connected to a maximum of three contacts (push buttons, a fire detector, etc.). For examples of the connection of this module see the following chapters.
Fig. 1. An example of connecting an ESS sensor (in this case it is JS-20) scanned by the C-IT-0200S module