Usuperlink Wireless Bike Alarm with Remote 2 Set

The Usuperlink Wireless Bike Alarm with Remote is the perfect way to keep your bicycle safe and secure. This wireless bike alarm uses three AAA alkaline batteries (not included) that stand by for 6-10 months, while a 12V/27A alkaline battery (included) will stand by for over one year. The wireless range is 30 meters, allowing you plenty of coverage to keep your bike safe. And the working environment temperature ranges from -20 to 60 degrees, with storage temperature ranging from -30 to 70 degrees and humidity levels of less than 80%. Its features include arming and disarming, adjusting touch sensitivity, changing the electrical bell sound, searching vehicle, SOS functions, and a low battery indicator. With so many useful features in such a compact design, you'll be able to keep your bike safe no matter where you go! The program to power on for first use 1. Press and hold the arm key of the remote until the alarm sounds a short "Bi" 2. Shake the alarm, and you will hear three times s