?<strong>Overview:</strong><br>This item is a smart security bicycle alarm£¬ can send out alarm sound when detect slight vibrate of the bike£¬ and the sensitivity is adjustable with high/middle/low grade£¬ which can better protect your bike from being stolen.<br><br><br><strong>Features:</strong><br>*4 digital code£¬ only the user can unlock£¬ default ABCA.<br>*High/middle/low sensitivity adjustable£¬ default middle.<br>*Anti-thief function£¬ send out alarm sound (above 105db) when detect vibrate.<br>*Recommend to use this alarm with your bicycle lock together for better protection effect.<br>*Can be used in rainy days with proper installation (code buttons upwards£¬ battery cover downwards)<br><br><br><strong>How to Use:</strong><br>1. Set alarm. Press "B" for 3s£¬ you will hear a "Di" sound then the unit will work after 5s.<br>2. When trigger the alarm it will sound 5 times£¬ if triggered again within 5s it will sound for 15s continuously.<br>3. Relieve alarm. Input 4 digital code (default ABCA)£¬ you will hear a "DiDiDi" sound if correct. Input wrong code£¬ you will hear a long "Di" sound.<br>4. The key pad will be locked for 3 minutes if you input the wrong code 4 times in succession.<br>5. Code change (default ABCA). In disarmed state£¬ press "A" for 3s and you will hear a short "Di" sound£¬ input old code£¬ you will hear a "DiDiDi" sound if correct. Then input 4 digital new code in 5s£¬ you will hear a "DiDiDi" sound if success. Either input the wrong old code or fail to change the code£¬ you will hear a long "Di" sound. Then you should repeat the process.<br>6. Take out the battery exceeding 30s£¬ it will go back to default code automatically.<br>7. Sensitivity adjust (default middle). In disarmed state£¬ 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<br><br><br><strong>Specifications:</strong><br>Alarm Sound: above 105db<br>Button A: set code (3s press)<br>Button B: set alarm (3s press)<br>Button C: Set sensitivity (long press)<br>Material: Plastic<br>Power Supply: 9V battery (not included)<br>Item Size: Approx. 9.8*6.1*3.6cm / 3.86*2.4*1.42in<br>Item Weight: Approx. 51g / 1.8oz<br><br><br><strong>Package Information:</strong><br>Package Size: Approx. 11.5*5.5*8cm / 4.53*2.17*3.15in<br>Package Weight: Approx. 100g / 3.53oz<br><br><br><strong>Package List:</strong><br>1 * Bicycle Alarm<br>1 * User Manual