Velleman HAA54 - Manual (Page 2)

HAA54 GB 2
HAA54 – PIR MOTION DETECTOR
1. Description
The HAA54 employs “Double-Twin Optics”-technology and the security logic is supplied by the
ASIC-processor (Application Specific Integrated Circuit), which was developed for this specific
application.
The Double-Twin Optics system combines two optical structures and heat detectors in one
housing. Both heat detectors are equipped with a dual element that produces low-level noise
only. This enables the HAA54 to create a detection pattern that only reacts to actual intruders
and ignores pets or rodents.
The Double-Twin Optics system is controlled by the ASIC-processor. This processor detects the
change in polarity of a signal caused by an intruder. Thanks to this technique, both channels
have a high degree of immunity against common radio interference and power surges. This
processor also provides the HAA54 with a number of additional functions : digital pulse counting,
temperature compensation, warm-up delay, alarm controls and an alarm activation delay. These
characteristics maximise security and provide excellent protection against false alarm.
2. Features
• “Double-Twin Optics” detection system
• Detection with changing polarity of the signal
• Security logics are integrated in the ASIC-processor
• SMD technology, greater EMI (electromagnetic immunity) and better protection against RFI
(radio frequency interference)
• Automatic temperature compensation
• Normal response or pulse counting for “HARSH” (unstable) environments
3. Detection Pattern