This is Vibration Activated 110dB Bicycle Anti-Theft Security Alarm with Password Keypad. It is made of high quality and durable material for long time use. Good choice for you.
4 digital code, only the user can unlock
Adopt micro-computer technique, have high-middle-lower sensitivity choose
Low power consumption to allow the battery a long life
Protect the bike lock from destroyed and prevent the behavior of moving the bicycles by the thief
Easy to install
Powered by: 1 x 6F22 9V Battery (Not included)
Dimensions: 3.86" x 2.36" x 1.42" / 10 x 6 x 3.6cm
Weight: 101 g / 3.56 oz
1 x Bicycle Alarm
4 x Screw
1 x Use Manual
1. Default code "ABCA"
2. Code change. when the unit not work Press the "A" for 3 seconds and you will hear a short "beep" sound, input old code, you will hear a 2 beeps sound if correct. then you should input your 4 digital new code not later than 5 seconds then you will hear 2 beeps if success. Neight you input the wrong old code or failed to change the code you will hear a long "beep". When you romove the battery, the code will revert back to the history (ABCA)
3. The key pad will be locked for minutes if you input the wrong code 4 times in succession, and will resume 3 minutes later.
4. To set the alarm: Press B for 2 seconds, you will hear 1 beep if successful and it will arm 5 seconds after the beep.
* 5. To disam the alarm, jusr enter you 4 digital code and you will hear 2 beeps to confirm that the code has been accept 6....7...8...(If you want to know more, please see the Use Instruction.)