Product Name: Inductive Card LockModel Number: YDL-R51Place of Origin: ChinaFeatures: 1) The hotel lock uses core parts, it is safe and durable, non-contact to open the lock and it is one of the most advanced smart locks widely used in entrance control 2) Precision make: copper forging technique, processed 400 hours by anti-eroding and anti-dust frog, painting hardness is 4H stainless steel processed in high temperature 3) Control board: covered by special paint to prevent the board from becoming damp, contaminated and eroding, normal cycle is over 15 years 4) USA TEM IC T5557 RF card, it is highly safe and reliable 5) Storing the last 250 unlocking records