Lock & Unlock Mode:This smart electronic lock can be locked and unlocked by password or remote control. It is very convenient without any key. The remote control can control multiple locks or similar remote alarms at the same time. The lock can learn up to eight remote controls. Timely Alarm:The electronic lock's alarm is very sensitive, and an alarm can be triggered immediately when the lock is moved or moved. When the wire rope is cut off or the locking screw is removed, an alarm will be issued immediately. If you enter the wrong password three times, the alarm will be activated and the alarm sound will reach 115 decibels or more. IP55 Waterproof & Dustproof:IP55 waterproof and dust-proof grade, suitable for indoor and outdoor use. It can be used normally in the temperature range of - 10 60.With this lock, no matter how bad the weather is outside, it can protect your bike or motorcycle safely and never be stolen. Four-digit Password:This product supports four-digit password combination, password combination of up to 256 groups, the operation is very simple, very convenient, you must remember after setting the password, otherwise the lock will automatically open the alarm after entering the wrong password three times. Specifications: Lock body power supply: 3 AAA No. 7 batteries (Not Included) Remote control power supply: 1 "CR2032" battery (Not Included) Lock main battery life: standby mode, about 5 months or more Remote control battery life: standby mode, about 3-5 years Remote control distance: greater than 40 meters Cable specification: diameter 10 mm, length 80 cm (optional 40 cm/1.2 m) Specification of steel 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/10.6oz Package Included: 1X Lock (Batteries Not Included) 1X Remote Control (Batteries Not Included) 1X User Manual 02:Package Included: 1pc x Vibration Alarm (Battery is NOT included.) 1pc x Remote Controller 4pcs x Screws 2pcs x Screw Caps