KEYLESS ENTRY: Forget about losing your keys once and for all. This Smart Lock gives you the freedom to secure your home without the need for a key. EASY ACCESS: Access your home using a PIN code, key card, key tag, remote fob or Smartphone app (when using the Yale Access Module and Yale Home app). EASY TO USE: The keypad is illuminated so you can see the digits clearly and features a thumbturn for accessibility. TEMPORARY ACCESS: Set 24hr pin codes or set up to 20 unique PIN codes for visitors. SECURITY AS STANDARD: Features an 80dB internal tamper alarm with bank level encryption, as well as incorrect pin code feature for greater security (the lock will disable access for 1 minute after 3 incorrect attempts). EASY FIT: This lock is compatible with most timber doors with 60mm back-set nightlatches, allowing for quick and easy installation. (Nightlatch not included). BATTERY OPERATED 4x AA batteries are included and an alert is given when the batteries are running low. In the event of AA batteries failing, there is a 9V battery connection override backup. UPGRADE TO SMARTER: Insert a Yale Access Module (sold separately), into your Smart Lock to gain access to the Yale Home app, enabling remote control, voice assistant integration and link to other Yale security products. SATISFACTION GUARANTEED. 2 year manufacturers warranty., Weight: 1.735 pounds, Manufacturer: Yale