This is 125KHz ID Proximity Card Door Access Control White. It is used in patrol system￡? attendance systems￡? access control systems￡? enterprise systems￡? radio frequency identification field etc..                                    Features            Exquisite appearance￡? durable￡? does not fadeYou can put it in your card bag. Very easy to carryThis ID card spray one inner code on its surfaceThis card have no direction. It is very easy to be identifiedTypical Applications: Patrol system￡? attendance systems￡? access control systems￡? enterprise systems￡? radio frequency identification field                                                            Specifications            Chip    TK4100    <br>Operating Frequency    125KHZ    <br>Sensing Distance    8 - 20 cm    <br>Working Temperature    -10 ~ +50??    <br>Material    Plastic    <br>Color    White    <br>Dimensions    5.4 x 6.8 x 0.2 cm / 2.13 x 3.86 x 0.08 inch (L x W x H)    <br>Weight    9g / 0.32oz    <br>                                                            Package Includes            30 x 125KHz ID Proximity Card Door Access Control White