Smart Alarm Lock Anti-Theft Chain For Bike Gate APP Wireless Remote Control Blue Electric Door Spiral Four-digit PasswordsDescription:Feature: Lock & Unlock Mode:This smart electronic lock can be locked and unlocked by way of password or remote control. It is awfully handy with none key. remote control can management locks or similar remote alarms at the same time. The lock can be taught as much as eight remote controls. Timely Alarm:The electronic lock's alarm is terribly sensitive, and an alarm could be precipitated directly when the lock is moved or moved. When the twine rope is bring to an end or the locking screw is removed, an alarm may be issued immediately. If you input the wrong password 3 times, the alarm will be activated and the alarm sound will reach one hundred fifteen decibels or more. IP55 Waterproof & Dustproof:IP55 waterproof and dust-proof grade, appropriate for indoor and outside use. It can be utilized normally in the temperature differ of - 10 +60℃.With this lock, no matter how dangerous the elements is outside, it'll your motorcycle or bike safely and never be stolen. Four-digit Password:This product supports four-digit password combination, password mixture of up to 256 groups, the operation is terribly simple, very convenient, you should remember after setting the password, otherwise the lock will robotically open the alarm after getting into the wrong password three times. Satisfiction Services:We solemnly promise you that while you find problems with the product itself, you would contact us in time. we will definitely offer you a reply in the first position and go back it for you. please feel free to apply it. Specifications:Lock body power supply: 3 AAA No. 7 batteries (Not Included) Remote management power supply: 1 "CR2032" battery (Not Included) Lock main battery life: standby mode, about 5 months or more Remote management battery life: standby mode, about 3-5 years Remote management distance: more than 40 meters Cable specification: diameter 10 mm, size eighty cm (optional 40 cm/1.2 m) Specification of metal chain: 6mm in diameter and 80cm in length (40cm/1m optional) Operating temperature: - 10 ~60℃ Storage Temperature: -20 ~+80℃ Size: 9.2*5.5*3.4cm/3.6*2.2*1.3in Package Weight: 300g/10.6ozPackage Included:1X Lock (Batteries Not Included) 1X Remote Control (Batteries Not Included) 1X User Manual