Password or remote control completes lock/unlock without key. Alarm immediately when shaking or moving the lock. The alarm will be given immediately when the steel rope is cut or the lock screw is disassembled. Call immediately if you mistype the password three times. The alarm sound reached more than 115 decibels. Wire rope diameter 10 mm, length 80 cm. Four-digit password, password combination up to 256 groups. Lock/unlock/lock-seeking car/learning code operation of remote control, LED indication. Lock/unlock/lock-seeking car/learning code operation of remote control, LED indication. IP55 waterproof and dust-proof grade, suitable for indoor and outdoor use. It can be used normally in the temperature range of - 10 +60. A remote controller can control multiple locks or similar remote alarms at the same time. A lock can learn up to eight remote controls. Lock supply: 3 AAA No. 7 batteries (Not Included) Remote control power supply: 1 "CR2032" battery (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: 40 meters Specification of steel chain: 6mm in diameter and 80cm in length Storage Temperature: -20 ~+80 colour:black Material:Plastic + metal Size: 9.2*5.5*3.4cm/3.6*2.2*1.3inch Package Contents: 1 * Lock 1 * Remote Control 1 * screwdriver Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.