Protect your bicycle with this Wireless Bike Alarm With Remote Simple to operate and easy to install  Comes with 1 x alarm, 1 x remote and 1 x screw kit  Dimensions: 9.5cm x 6cm x 3.8cm  Alarm powered by 1 x 6F22 9V battery Remote powered by 1 x L828 battery The alarm sensors 10m above the terminal and up to 30m in open areas With a loud alarm, you can be at ease when it comes to keeping your bike secure Prevent theft with this Wireless Bike Alarm With Remote - save 50%