ZINC ALLOY ☀REVISIBLE TOUCHSCREEN KEYPAD LOCK － 2020 new door lock with key card , suitable both left handle and right handle , No need to disassemble smartphone deadbolt, just determine the direction of the door before installation, and turn the direction directly by twisting the handle , never worry about insatall keypad lever. ☀MULTIPLE WAYS TO UNLOCK - 5 - in -1 real keyless smart lock ：Smart Phone + Passcode + Fingerprint + IC Card + Mechanical Key , Work with alexa and Apple watch with out your phone , Never worry about forget to bring the key. ☀SMARTPHONE APP TTLOCK － Use to TTlock app , You can lock and unlock with smartphone ,Grants access to your family, guests or service people via a code or an eKey for specific dates or times , You can view all the people who opened the external lock and enter, Knowing everyone who enters , Better choice for your home , office ,apartment and resteruant. ☀ EASY TO INSTALLATION － Smonet lever designed to fit 1-1/2" ~ 1- 7/8" thickness door , only need one extra hole and one wiring , The outer lock can be reversed after installation . Don't worry about getting locked out with dead batteries, the lever comes with 2 physical keys and use an external powerbank to activate your lock even when the batteries are dead . ☀ MONEY BACK GUARANTEE － SOMENT provide a money back guarantee if you do not love in it in 30 days , 1 year warranty and Life-time technical support. Please send any questions you have to smonetservices@hotmail.com . Your suggestion will help us to keep improving products and provide more great products.