Product Name:Smart hotel door lock Make up of stainless steel for panel and handle,more stable and longer to use. ApplicationHotelsApartmentsSchoolsEnterprisesMake upPanel and handle: made of stainless steel, more stable and longer to use.Surface treatment: polished with the latest nanotechnology, will not fade within 6 years.Lock core: made of powder metallurgy materials clutch, no dead locking. ...