Figure 6: Relay response
Alarm condition
Beam interruption
Min 4 s Alarms relay
Disqualification due to reduced infrared signal
Reduced Infrared signal
Alarm relay (NC)
Max 60 s
Disqualification relay (NO) [1]
Disqualification due to obstruction by an object or person
Beam interruption
Max 60 s Alarm relay (NC)
Disqualification relay (NO) [1]
[1] This releases the alarm relay when there are several alarm relays connected in series (for
example, different modules in one pillar). If this option is not required, connect the alarm and
disqualification relays in series.
Connecting the tamper detection contact
Remove the PCB at the bottom of the module, connect the two wires and then
replace the PCB sliding it in the two grooves until it can go no further, and taking
care not to twist the contact strip.
SB Series AIR Beam Detectors In
stallation Manual 9
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