Dual Frequency: 125KHz EM/HID + 13.56MHz Mifare Series Full Mifare Support: NXP Mifare, Mifare Plus, DesFire, Mifare Pro, Mifare UltraLight, Mifare Class 4K, NFC and CPU Cards Metal Anti-Vandal Case with IP67 Waterproof Rating Wiegand 26~58 Bit Programmable Output Wide Operating Range: -40°C to 60°C External LED Control & External Buzzer Control Reading Range 1~4cm for Fast and ... https://www.secukey.com/product/dual-frequency-wiegand-reader-s6-rx.html