12V motorcycle alarm has one-way and two-way points, so what is one-way two-way: one-way alarm is reached when the alarm conditions alarm horn will send out alarm, the remote control around will not call. The two-way version alerts the burglar alarm, and the two-way remote control beside it also calls and vibrate to remind the car owner. Even if the thief cuts the wire or pulls out the spare battery, the remote control in the hand will not stop reminding the car owner (unless the car owner unlocks it), which is \"more anti-cutting wire than anti-cutting wire\".