Finger Print Door knob

【4-IN-1】Fingerprint bedroom door lock: fingerprint + password + 2 mechanical keys + APP control, 【Upgraded large fingerprint sensor】The new 160*160DIP sensor has a 35% larger recognition area than the old 120*120 sensor, making the recognition more accurate and stable. 【USB emergency charging】Fingerprint Door knob It has a low battery alarm function and comes with a USB port for emergency charging.Requires 4 AAA batteries (not included) 【Easy installation】Suitable for left and right doors.