OPERATING MANUAL HAA51
PASSIVE INFRARED INTRUDER DETECTOR
INTRODUCTION
HAA51 Passive Infrared Intruder Detector is designed for indoor use in advanced residential
and commercial security systems. It detects the movement caused by a human target moving
across the detection field. The detector employs many features that are only available in the
most advanced intrusion detectors.
HAA51 is designed with the most up-to-date electronic circuitry for high performance and
reliability. It employs a dual-element, pyroelectric sensor incorporating a "daylight" filter
designed to provide immunity from common-mode signals such as the effect of strong hot or
cold air currents, variations in ambient temperature, background radiation and acoustic noise.
The dual-element sensor provides substantial immunity to false alarms. The HAA51 also
employs a pulse-count triggering circuit which provides further improvement in this respect.
HAA51 can also be selected for single-shot triggering.
HAA51 is designed to be surface mounted or corner mounted on a wall at the height of 2m
above the floor. It provides the illustrated protection pattern without calibration or adjustment.
THE CASE ASSEMBLY
THE PRINTED CIRCUIT BOARD
DESCRIPTION
* Fresnel Lens
an optical system for focusing the infrared radiation on the
heat sensitive elements of the sensor.
* Alarm/Walk Test Indicator
It lights up for approximately 2 seconds whenever movement
is detected.
* Knock-Outs
Entry holes for running connection wires in and out.
* Mounting holes
Prepared for fixing the unit to the wall.
* PCB Support Post
For supporting and fixing the printed circuit board firmly in
the case.
* Locator
For convenient observation of the detection zones.
* Sensor
The infrared signal detection device. DO NOT TOUCH.
