This 45mm abus 57 touch biometric fingerprint padlock offers compact security with advanced fingerprint recognition technology. The 45mm size makes it perfectly suited for smaller lockers, bike sheds, and storage units where space is at a premium whilst still requiring reliable protection. Simply touch the weatherproof sensor and the lock opens instantly. The 360 degree capable sensor identifies up to 20 programmed fingerprints from any position, providing convenient keyless access for multiple users. Registering fingerprints is remarkably fast – as one of two administrators, place your registered finger on the sensor for three seconds to activate 'register mode', or ten seconds for 'delete mode'. The lock features a replaceable cr2 battery that retains stored fingerprints even after replacement. Its coated die cast zinc body and hardened nano protect steel shackle offer robust construction, whilst double ball locking with automatic locking provides enhanced security for medium value items in medium risk environments. Features and benefits bull 45mm compact size ideal for smaller applications bull touch operated fingerprint access for up to 20 users bull 360 degree sensor reads fingerprints from any angle bull weatherproof construction for indoor and outdoor use bull replaceable cr2 battery with fingerprint data retention bull hardened steel shackle with double ball locking mechanism specifications padlock type biometric body width mm 45 shackle diameter mm 6.5 shackle height mm 30 shackle width mm 20 overall width 45mm. Overall height 95mm. Overall depth 23mm. Shckle height 30mm. Security level 6. Key type biometric.