SwitchBot Keypad Passcode Smart Lock Smart Home - SwitchBot Auto Lock Door Lock Key Security Bluetooth Wireless Entrance Door Burglary Prevention Home Management With Card Key Anti-theft No Construction Easy Installation Unlock with Passcode Product Model Number: W2500020 【Easy Installation】No wiring or construction required. Simply attach it to the door or wall with adhesive tape to complete the installation. It can be easily removed without damaging the appearance and structure of the door. 【Power Saving and Long Operation】Includes 2 CR123A lithium batteries. If the lock is unlocked 3 times per person per day, it can be used for 2 years by a family of 3. Battery replacement is only once a year. Unopened, unused item. Regarding the accessories, everything shown in the image is included. No receipt or proof of purchase. Please refrain from purchasing if you are looking for a perfect product. Warranty is not applicable due to flea market transactions.