Excellent Security Alarm Bicycle Steal Lock for Bike Bicycle with Included battery

• Adopt micro-computer technique. have High-Middle-Lower sensitivity choose.
• Quiver trigged, security and sensitivity
• Low power consumption to allow the battery a long life.
• Easy to installation and DIY
• Waterproof: attach permanently to your bike without worrying about having to remove it in bad weather
• Material: Sturdy plastic - no metal parts to rust
• Fit for: Bicycle motorcyle
• Color: Black/Red
• Power supply: 1 x 6F22 9V battery( not included)
• Dimensions: 9.5x6.5x3.7cm(approx)

        Usage:

• 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. Neight you input the wrong old code or failded to change the code, you will heart long 'Di' sound. Then you should repeat the press.
• If take out the battery excced 30s. it will go back default code automatic.
• Default sensitivity: middle
• Sensitivity adjust. When the unit not work, press " C " and hold on until you hear( you should loose your hands after you hear each sound):
• Di=High sensitivity; DiDi=middle sensitivity ; DiDiDi=low sensitivity
• Set alarm. Press " B " for 3 seconds, you will hear a ";Di" sound then the unit will work after 5 seconds delay.
• Relieve alarm. Input your 4 digital code then you will hear a " DiDiDi" sound if correct. If input wrong code, you will hear a long "Di" sound.
• The key pad will be locked for 3 minutes if you input the wrong code 4 times in succession, and will resume 3 minutes later.
• When triggered alarm had already sounded for 5 times, If triggered again within 5 seconds , it will sound continuously for 15 seconds. I'm sure so powerful function must can protect your bicycle effectively.