User's Manual

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The 2-way pager is a low-powered transmitter device used in monitoring the automobile security
status as well as in remotely starting engine and other optional features. Its features and
functions are described in the separate attached sheet.
The transmission is powered by 3.0 V Battery (type : AAAA) and works on 433.92 MHz single
fixed frequency. And use the pulse modulation. Details of circuit diagram and its block diagram
are shown on the attached sheets.
The automobile’s sensor will trigger the digital control signals and modulate the carrier
signal. The carrier signal is generated by a crystal oscillator/amplifier circuit of a 433.92
MHz crystal and a npn transmitter. The modulated output of the RF amplifier is coupled to
the coil.
Fundamental Frequency 433.92MHz
Power Source 3.0V Battery
Transmitting Time
Periodic ≤ 5 seconds
Associated Transceiver FCC ID : NJQTR67B
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.