Feature:1. Compatible with all ID/IC access control devices or ID/IC readers.2. It is used in access keys, elevator keys, etc.3. Repeatable entry and change times up to 100,000 times.4. It can keep copying information for up to 10 years without losing.5. It is made of high quality ABS material, rust and wear resistant.Specification:Condition: 100% Brand NewItem Type: Door Entry TagColor: BlueMaterial: ABSOptional Type: ID Card (EM4100 5200 125khz) / IC Card (13.56mhz)Card Reading Distance: 0.2-1cm/0.08-0.39inQuantity: 50pcsAnti-interference: YesRepeated Entry and Change Times: 100,000 (Times)Working Temperature: -25 C -75 CStorage Temperature: -15 C -45 CPackage List:50 x Door Entry TagNote:Please note that this product can only be read and cannot be rewritten.