1. Adopt the most stable import chip, strong anti-interference ability, improve the return distance, double antenna design.  2. Double sections can be used for environmental friendly mute design.  3. Double power supply system, no fear of shears.  4. Double insurance design, want to start the car, remote control, the key is indispensable.  5. Double alarm, the car is vibrate, the main engine horn and the remote control alarm at the same time.  6. Remote control intelligently identifies the user's current operation.  7. Remote control of vehicle status at all times.  8. Fully control the ignition circuit of the car. It is necessary to use the key and remote control to ride the bicycle.  9. Host has learning function, remote control loss can be canceled.     Specification:  Working Voltage: DC 12V.  Static Current: ≤5mA.  Remote Frequency: 315MHz.  Remote Distance: MAX100 meters in the open air.  Alarm Volume: about 128 db.  Working Temperature range: -15℃--- +80℃.     Note:  In the defensive state, when the main engine is shocked, the horn on the main engine alarms, and the user's two-way remote control also alarms. The bidirectional anti-theft device has all the functions of the common unidirectional anti-theft device, and has more remote control alarm.  This product does not distinguish the ignition mode of motorcycle, AC and DC are universal.  As long as the car has alarm interface, plug and play, perfect installation.  The remote control is super powerful. With a 7 battery, standby time is conservatively estimated for more than half a year.     Package Included:  1 X Anti-Theft Burglar Alarm.  1 X Black Unit.  1 X Connection Cable.  2 X Remote Control.  1 X Adhesive Tape.  1 X User Manual