Cheap And Discounts 125KHz RFID USB2.0 Card Reader,Contactless Proximity Sensor for EM4100 TK4100 with Setting Tool for Access Control Wholesale. Buy Directly From Merchant SZiTW READER Official Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.