Scientech Electronics IR2N Motion Detector User Manual
Scientech Electronics Co., Ltd. Motion Detector
User Manual
PIR MOTION DETECTOR
INTRODUCTION
The PIR-2S Passive Infrared Detector is specially designed for providing space protection in a wireless
security system. It detects the movement of human body heat within its effective coverage; thus when an
intruder crosses or enters the area, the resulting change in infrared energy from the intruder will be detected
and an alarm signal will transmit to the Base Unit.
IMPORTANT NOTE
To get the best sensitivity, PIR should be mounted to detect movement of the
intruder "across" room, rather than "toward" the detector.
Do not install where the detector faces a window, since movement outside could
cause unwanted alarms.
Make sure the detection area does not have obstructions (curtains, screens, large
pieces of furniture, plants, etc.) that could block the pattern of coverage.
Avoid placing the sensor in areas containing objects likely to produce a rapid
change in temperature, such as central heating radiators or ducts (or heaters of
any kind), air conditioners, open flame, etc.
Note that pets can trip sensors and plan sensor placement and pet-restricted
areas accordingly.
INSTALLATION
1. Remove the front cover by holding the base in one hand, and squeezing the top center of back cover
with the other hand (Fig.1).
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Fig. 2
Fig. 1
2. Insert two AAA alkaline batteries. Select “Installer Mode” on the Base Unit, and enter the Installer
Password to gain access authority. Then select \Set Device\Enroll Device\Burglar Sensor\Enter Zone
No. to enroll the ID of PIR-2S by pressing its TEST button on the PC board. You may change its
various attributes under \Set Device\Change Device Setting\Burglar Sensor Change, to fulfill different
requirements.
Important Notice: In order to reset the microprocessor properly, before replacing the batteries in the
PIR-2S, please press the TEST button for 5 seconds to discharge the energy that remains in the
capacitor on the PC board. Otherwise, it may not restart.
3. Wait 5 minutes (after power on) for sensor warm-up. Because the PIR-2S is a low-power design, it
takes a few minutes to reach stable state.
4. Attach the base with the supplied Velcro (or with optional bracket) at a selected location, and make
sure the distance between PIR and Base Unit is not over RF transmission range.
5. WALK TEST
It is essential to perform a walk test to verify optimum detection coverage. To do this, first hold the
“TEST” button on the PIR-2S board down for at least 3 seconds, until the LED turns ON→OFF→ON,
then release the button. Afterward, the PIR-2S enters “TEST” mode for 3 minutes. Replace the cover of
the PIR-2S, then walk into the detection area at normal speed, observing the LED indicator. The LED
stays ON normally, and turns OFF when motion is detected. If the detection pattern is not satisfactory,
re-aming the detector or adjusting the vertical pattern by sliding the PC Board (refer to Table 1) is
recommended.
Notes: 1) Test mode can be terminated before the 3-minutes timeout, by pressing the “TEST” button
again untill the LED turns OFF. Afterward, it returns to NORMAL mode.
2) In NORMAL mode, the PIR-2S activates, the transmitter when it initially detects the first
movement, then disables itself. The unit will resume operation only after about 3 minutes wit
no further detection of movement. In other words, if installed in a heavy traffic area, the
PIR-2S will not transmit, until the area has been evacuated for 3 minutes. The purpose of this
feature is to reduce power consumption and prolong battery life.
6. RADIO LINK TEST
Open the top cover of the PIR-2S, and press the TEST button on the PC Board to see whether the Base
Unit can receive the radio signal.
7. PULSE COUNT SELECTION
The PIR-2S is equipped with a programmable pulse counter; that can be set by placing the jumper on
the desired setting (2 or 4). The PIR-2S automatically overrides to one-pulse mode while in "TEST"
mode.
2 pulses: This setting has high sensitivity of detection. Two pulses should be selected when the
detection range is longer (over 5m)
4 pulses: Alarm signal will only be sent if 4 pulses are detected within approximately 1 minute. This
setting provides the maximum protection against false alarms caused by all types of
environmental disturbances.
8. LED ON/OFF SELECTION
After installation, the user may put LED ON/OFF jumper at OFF position to prevent the PIR from
being discovered by an intruder. Nevertheless, the LED is enabled automatically when the PIR-2S is in
“TEST” mode, even with the jumper in the OFF position.
VERTICAL ADJUSTMENT
The detection pattern can be adjusted by sliding the PC Board up and down. Usually, adjustment is
unnecessary when the PIR-2S is mounted between 1.7 to 2.5 meters from the floor. If the mounting height is
out of this range, refer to the following table.
HEIGHT
1-1.6m 1.7-2.5m 2.6-3.2m
SCALE
1 2 3
Table 1
DETECTION PATTERN
TOP VIEW
SIDE VIEW
2m
2m
6m
15m
SPECIFICATIONS:
Detector Type: dual element
Coverage Angle: 110
o
Effective Distance: max. 12m @ambient temp. 25℃
Power: two AAA alkaline batteries
Current: 18uA @standby, 20mA @activation
Estimated Battery Life: 2 years (@actuated 40 times/day)
Pulse Count: 2 or 4 pulses selectable
RF: 915Mhz, less than 10mW
Size: 70.5 x120 x 45 mm
Weight (w/o battery): about 85g
Note: This equipment has been tested and found to comply with the limits for a Class B Digital Device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in accordance with the instruction,
may cause harmful interference to radio communication. However, there is no grantee that
interference will not occur in a particular installation. If this equipment dose cause harmful
interference to radio or television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one or more of the following
measures:
--Reorient or relocate the receiving antenna.
--Increase the separation between the equipment and receiver.
--Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
--Consult the dealer or an experienced radio/TV technician for help.
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