Protect the bike lock from destroyed and prevent the behavior of moving the bicycles by the thief
Have the functions that the anti-theft lock can not substitute
Code switch, convenience to use, avoid key switch weakness which easy to open with other key
Comes with English/Chinese user manual
Size: App 9cm x 6cm
Seat tube: App 2.8cm
Power supply: 1* 6F22 9V AAAA battery (Not included)
Default code " ABCA"
Code Change. When unit not work.
Press 'A' for 3 seconds and you will heart a short ' Di' sound, input old code, you will heart a 'DiDiDi' sound if correct. Then you should input your 4 digital now code not later than 5 seconds, you will heart a 'DiDiDi' sould if success. If you input the wrong old code or failed to change the code, you will heart long 'Di' sound. Then you should repeat the press.
If take out the battery exceed 30s. it will go back default code automatic.
Traditional chains, padlocks and U Locks only do half a job and can be pretty easily removed by those who know how, but even the sight of this alarm will have even the most determined of thieves thinking twice.If your bike is moved, the alarm will spring into action and give off an ear shattering shriek for 15 seconds.
No thief will want to hang around when this alarm goes off. 3 sensitivity levels allow you to determine how much movement is needed to trigger the alarm. When triggered alarm had already sounded for 5 times, If triggered again within 5 seconds , it will sound continuously for 15 seconds.
This bike alarm works very well and is easy to install. I use a 9 V rechargable battery, which lasts about 4 weeks. 1 Negative point though, I had to replace the alarm three times because it breaks down if it RAINS. After rain the a-b-c- contacts get defective!
Fortunally it hardly ever rains here in Spain!.