All, Hotel Doorlock KB 811CS Posted on May 9, 2020April 24, 2021 by lock korea 09 May 1.Colour:silver 2.Material:stainless steel 3.Open the door way: RF card, the key 4.Reading card distance: ≤3cm 5.Door thickness: 38~68mm 6.Working temperature:-20°C~50°C 7.Quiescent dissipation: less than 15mA lock korea KB 2020S KB 650