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 fade<br>    You can put it in your card bag. Very easy to carry<br>    This ID card spray one inner code on its surface<br>    This card have no direction. It is very easy to be identified<br>    Typical Applications: Patrol system￡? attendance systems￡? access control systems￡? enterprise systems￡? radio frequency identification field<br>                                                            Specifications                        Chip     TK4100    <br>          Operating Frequency     125KHZ    <br>          Sensing Distance     8 - 20 cm    <br>          Working Temperature     -10 ~ +50&#8451;    <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                1 x 125KHz ID Proximity Card Door Access Control White<br>