Electronic Smart Lock Biometric Fingerprint Door Lock with Bluetooth Keyless Home Entry with Your Smartphone,ZKTeco PL10B This smart Door Lock is special Ddesign for bedroom with 3 ways to unlock-fingerprint / bluetooth / Key (Suggest Operation Temperature:&gt;=23) Handle, latch and strike is reversible design for all door open direction,Install guide video: search Smart Lock ML10-ID Installation Guide on Youtube Keep Track of Visitor,See a detailed log of who has entered and exited your home, and exactly when they did, from your smartphone Set Timezone Unlock Funciton:Provide housecleaners, dogwalkers, and others with access for a few hours, a week, or just specific times of the day Fit door thickness between 1.18" (30mm) and 2.12"(45mm), and optional for door thick between 2.16"(50mm) and 2.36"(60)mm,NOT WATERPROOF, we suggest used on Bedroom or office Interior doors