The modules have the same format, mount onto the panels’ DIN mounting rail and plug into one another.Important note on module capacity:Each fire alarm control panel/controller contains a power supply module BSS-310A and a communication module BSL-310.
The BS-420 and BC-420 panels have space for up to 12 modules totally inside the cabinet.
An Al_Com+ stack can contain up to six loop driver modules (BSD-3xx)
By using AutroFieldBus, an additional Al_Com+ stack (with up to six additional loop driver modules) can be added to the system. NOTE! The AutroSafe panels are certified with the Al_Com+ modules mounted inside the panel cabinet.