ZTTO Bicycle Bike Anti-Theft Security Alarm Lock Sound Alert with Remote Control

Lätt att montera på cykeln och den fungerar perfekt. Batterierna verkar vara väl skyddade för fukt. Märkningen på fjärrkontrollens knappar försvann fort, och snart slutade till/frånslag att fungera.

The bicycle alarm arrived in northern Germany after 16 days. After unpacking, I noticed that it rattles a lot. But that disappeared after inserting the 9-block battery. The bracket is intended for 15 mm tube thickness (frame). But my Ebike has a 30 mm frame. It makes sense to mount the alarm system under the saddle. Screws are included. The remote control is already equipped with a battery (replaceable) and works immediately. The alarm volume is around 110 decibels. Triggered when the bike moves. If you press "close", there will be 1 confirmation beep, if you press "open" 2 confirmation beeps.

Without movement the alarm starts when it should be in standby. Sometimes it waited a few seconds and then sounded alarm. The remote grey button sometimes sticks for a few minutes. I have assembled and reassembled the remote times. Removed rubber buttons but still I can set the alarm and half a second later it is alarming!! The product is a good idea. Can I have 2 replacements which have been checked first? How do I return this unreliable item. Soon I will order other items. Thank you

This alarm system for bicycles and scooters or installed on a trailer is flawless. The noise of this alarm system alone scares certain people. I've been using the same alarm system for my e-bike for over a year now I had to buy a second one to have a complete bike with trailer to secure