1. The continuous chirp of the siren can not be stopped by transmitter after installation.
    1) Check whether the plug is inserted. Properly.
    2) Check whether the wires are connected properly.
    3) The transmitter is not matching mainframe and need to be programmed again.
    4) The siren is damaged.
    5)The fuse of mainframe is burnt.

2. When the car is parked on roadside and armed, there is false alarms when heavy vehicles pass.
    1) The sensitivity of the shock sensor is too high. Please lower the sensitivity by adjusting the shock sensor. If the  problem still exists, please change another shock sensor.

3. The siren does not chirp when the alarm system is triggered.
    1) Check the siren.
    2) Check the wire connection between the mainframe and siren.
    3) Check the sensitivity of the shock sensor.
    4) Mute arm.

4.Transmitter is ineffective or the control distance decreases obviously.
    1) Check the installation location of the antenna.
    2) Check the connection between the antenna and mainframe.
    3) High building, radio tower or high frequency electromagnetic wave may affect the control range.
    4) Low power of the transmitter battery. Please replace or recharge the battery.
    5) Rusty battery spring.
    6) The frequency of the transmitter has been changed, please replace new transmitter or change the frequency to be compatible with mainframe.
    7) The transmitter is soaked or damaged, please change a new programmed transmitter.
    8) Low voltage of the car battery (lower than 10V).
    9) If both transmitters do not work, please check the circuit connection of the mainframe and power.
    * Test the mainframe functions by another programmed transmitter. If the mainframe can work normally, it proves the transmitter has problem.

5.The central door lock does not work normally or does not work at all.
    1) Check the wiring according to Installation Manual.
    2) The fuse may be burnt, please check the wiring and change the fuse.
    3) The motor of central lock is damaged.

6. The LED indicator does not flash after disarming , or the siren does not chirp when the door is opened without disarming.
    1) Door trigger wire is connected properly.
    2) Door switch is ON..
    3)The siren is damaged.

7. The LCD transmitter does not work.
    1) Improper battery installation.
    2) Low power of the battery.
    3) The LCD transmitter is soaked or damaged.