Wintecronics L500HAA User Manual

L-500HAA/ 433.92 USER’S MANUAL

1. To confirm setting of current car security mode, press

To get feedback or check of car’s current security mode , press •(Red button ) + Œ for 1 sec and

release.

2. To set “PAGER AUTO – on ”, press • (Red button) +•
To set “PAGER ALL -off” ; press •(Red button)+• for 1 sec and release. Pager rings if
setting of “PAGER ALL -off” is done. A short beep sounds if “PAGER AUTO- on ” setting
is done.

Once the car security is armed , receiver automatically sets “PAGER- on” mode. If the car
security is disarmed, receiver will get into “PAGER-off ” mode.

Normally “ PAGER-AUTO -on “ settings is recommended for consumers.

ÜSet the “PAGER-off ” mode if there is someone in the car in case that paging might be needed .
ÜFactory setting in all receivers is “PAGER-off”。

3. To set receiver “ MUTE” mode; press •(Red button)+Ž 1 sec and release

MUTE appears if “ MUTE “ mode is set on. Under this mode, pager will vibrate without beeps
for any emergency warning. Whether the receiver is set “ ON ” or “ OFF ” the receiver will
beep if your car sends any emergency alert call.

4 . •(Red button) and its mode.
To get the LED backlight , press •(Red button) 1 sec and release. LED turns off after 3 secs.

When the receiver’s battery power is low, (BAT LOW) warning will appear. Pressing of this
button is followed by beeps sound.

•

(Red button ) +Œ

5 .BAT/LOW

Change the battery，if the ( BAT/LOW) icon appears. Change the battery when the beeps
become low even the ( BAT LOW) does not show up.

6. How to change battery:

Push LOCK, slide open the battery cover. Change battery making sure of polarity in proper
position. The receiver beeps 1 sec if the receiver gets into operating mode. If fails, take out the

battery and reinstall it after 5 sec.

ÜAfter changing of battery, press•(Red button)+Œ to make sure the receiver setting is same as
the car current security status.
ÜEach time the battery is changed, make sure the battery cover is properly closed and LOCK in
position.
Ü Use of alkaline battery is recommended.

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There are total 4 buttons which if pressed will produce the digital control signals and modulate the carrier signal. The
carrier signal is generated by a crystal oscillator/ amplifier circuit composed of a 434 Mh crystal and a npn transmitter.
The modulated output of the RF amplifier stage is coupled to the coil.

All the tuning and verification are done by manufacturer during the production process and no adjustment is allowed
by any consumer. No external ground is needed in such device.

The Wintercronics Co., Ltd. Model: L-500HAA (referred to as the EUT in this report) is a

Transceiver of car alarm security system. It offers wireless remote control, ideal for use in

vehicle security system to activate the function of center door lock control system and car
searching except the alarm system.

A major technical descriptions of EUT is described as following:

A). Fundamental Frequency: 433.92 MHz

B). Modulation : Pulse Modulation

C). Antenna Designation: Non-User Replaceable (Fixed)

D). Power Supply: DC 1.5V, Battery Operated.

E). Receiver type : Superheterodyne

Fundamental Frequency 433.92MHz
Power Source 1.5V Battery Operated
Transmitting Time
Associated Receiver FCC DOC

Periodic ≤ 5 seconds