High Quality Cheap Fingerprint Stainless Steel 304 Smart Door Lock

Q:How long is it for sampling A:5 working days Q:What warranty do you provide A:We provide 1 year warranty, and lifetime maintaince by providing the main parts, and only charge the cost. Q:Is OEM available? A:Yes,we can help to print your logo and OEM Q:What is the door thickness required for the mortise? A:32-62mm Q:What should we do when battery is run out? A:The lock will beep to indicate when power is going to run out,please change new batteries when it alarm. the card still can open about 200 times when it indicate. If the battery does not work,you can use 2 mechanical keys to open the door. Q:How does the lock get powered and how long can it last? A:3pcs AA batteries and it last for 6 months