From the field: Small Warehouse

Test of a new Notifier NFS-320 system in a small warehouse/office facility. You can see in this video. We are testing the key stations for the beam detectors. There are two beam detectors on this system. They are the Notifier FS-OSI-RI

[@aidanthetoiletelevatorfire7554]

These L-Series do have a bit of an echo to them