The relay can be programmed to be activated by any single device, groups of devices or all system devices. All types of system input signals can be arranged to operate the A50E-2 which can include control panel indicators, zonal outputs, call points or detectors.
Housed in a low profile, double width molding the interface is designed to clip directly onto a standard DIN rail fixing or be installed in a SMB-DIN1 box (one unit capacity), or a SMB-DIN2 box (two unit capacity).
Installed as part of an analogue addressable system, up to 127 line devices (detectors, call points or interface units) can be connected to each of the control panel loops. All loop devices incorporate switch settings enabling them to be assigned a unique address which is polled by the panel every two seconds.