NFC unlocking, the phone is the unlocking key(It can only be used on Android phones and Android watches that support NFC function). Semiconductor fingerprint unlocking, the pleasure of opening with just one touch,Semiconductor fingerprint sensors effectively prevent fake fingerprints and greatly improve the security, accuracy and rejection rate of fingerprint recognition. No need to get up to open the door easily. Remote control can quickly unlock the door remotely.No need to stand up at the front desk, just press the remote control button to unlock the door, and the courier and takeaway waiter can come to visit,Faster and more convenient. Stainless steel ring hook free installation ground plug,The stainless steel hook has a 6mm thickened and hardened design, which can withstand a force of about 150KG without ground insertion, and is easy to install without drilling. Anti-blocking algorithm design improves your user experience,Anti-blocking algorithm supports more power saving, improving work efficiency and life,Improve calculation and extend motor life., Manufacturer: Vjsujehgy