Keyless, password, and remote control for locking and unlocking. Alarm activates when the lock is vibrated or moved. Alarm triggers if the cable is cut or battery cover is removed. Three incorrect code entries activate the alarm. Alarm sound reaches up to 110dB. Programmable 4-digit password with up to 256 combinations. Remote control functions include lock, unlock, vehicle finder, and pairing, with LED indication. Operated by 3 x AAA alkaline batteries (not included) with low battery indicator. IP55 rated for water resistance. One remote can control multiple locks or similar remote alarms simultaneously. Each lock can be paired with up to 8 remotes. 3 x AAA batteries (not included) provide approximately 3 months of operation. 1 x CR2032 battery for remote (not included), lasting over 3 years. Remote control range: up to 40 meters. Cable length: 80cm (options: 40cm, 120cm), diameter: 10mm. Chain length: 80cm (options: 40cm, 100cm), diameter: 6mm. Working temperature: -10°C to +60°C. Storage temperature: -20°C to +80°C. Dimensions: 92 x 55 x 34mm. Color: Black. Material: ABS. Package includes: 1 x Alarm lock, 1 x Remote control. Product does not include any additional items not listed. Note: Lighting and display differences may cause slight color variations. Measurement error allowed within +/- 1-3cm.