Smart lock system operable via smartphone, convenient with easy installation. - Model Name: Switchbot Lock, Keypad - Color: Black - Included: Main unit, batteries, instruction manual - Features: Remote control operation possible - Installation: Easy installation Thank you for viewing. Compatible with various locks With a combination of three sizes of thumb turn adapters and an adjustable base, it can be used with various keys. You don't have to worry about whether it can be used on your home door. With a low power consumption design, it can be used for about 180 days with two lithium batteries (CR123A) when unlocking and locking 10 times a day. Voice control "Alexa, unlock the front door." When family or friends visit, you can unlock the door with a voice command. You don't need to take your hands off, so you won't miss the best scenes of games or movies. When used as a trigger for your bedtime routine, you can turn off the lights and turn on the air conditioner at the same time as locking the door. In addition to Alexa, it also supports Google Home, Siri Shortcuts, IFTTT, SmartThings, etc. Remote operation (hub required) When used with SwitchBot hub products, you can check the status of the key and unlock the door from outside. It's perfect when family members forget their keys, or when friends or housekeepers come to your home. --------------------Manual Input Section-------------------- Switchbot Lock twin set, with keypad. Used for less than a year. It was in use until recently, so operation has been confirmed. There are scratches due to use, but it is relatively clean. After removing everything, I have removed the double-sided tape as much as possible. One spare double-sided tape has been used, so one is missing. Also, there is no spare double-sided tape for the keypad, so this is also missing. Please prepare double-sided tape and batteries yourself. The keypad still has batteries, so it is included as a bonus. Thank you.