This setting is the threshold at which the Detector will detect a fire
Default factory setting=35%
(Set for each Detector)
17. Fire Threshold
Complies with EN54-12 for sensitivity levels between 25% and 35% with a maximum delay to
fire of 20 seconds
13
• Sensitivity can be adjusted in 1% steps by pressing up or down keys
• Press to accept setting
EN Approved Sensitivity Ranges:
Analogue value 48 will be transmitted when the signal strength falls below a certain value; this
value is based on being 2/3 between 100% and fire threshold. The following table gives
examples of this, all other selectable thresholds will have pre-alarm thresholds calculated
based on the 2/3 calculation.
18. Pre-Alarm Threshold
Threshold
Signal drop to cause
pre-alarm
Signal strength to
cause pre-alarm
10% 7% 93%
25% 17% 83%
35% 23% 77%
50% 33% 67%
60% 40% 60%
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