Features: EM compatible proximity card reader. It reads the EM/MF card identification number. Transmits it to the access control system with Wiegand 26 interface. Specifications: Surpport Card: EM Cpmpatible RFID Card/MF 13.56MHZ Power Requirements: 9-15V DC at 150mA, A linear regulator is recommended(NOT included) Interface: Wiegand Reader Range: Up to 8cm Frequency: 13.56Mhz Operation Temperature: -20°C-60°C Operation Humidity: 5%-95%(non-condensing) Color: black Material: plastic+metal Package Contents: 1 x Access Control Card Reader Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.