Olympia Electronics - BSR-8120/MAR - Marine Approved Addressable Input / Output Unit
The BSR-8120 device has 2 independent inputs and outputs and it can work with any panel that supports Olympia A Protocol.
It is used for connection in the addressable loop multiple conventional fire detectors of Olympia Electronics, as well as other devices having free contact such as gas detectors, conventional fire detection panels, flow switches etc. They are installed on a DIN rail