The KR500M is a compact RFID Mifare card reader operating at 13.56 MHz with a read range of up to 5CM. It supports Wiegand connectivity (26-bit/34-bit default) and ensures fast card reading within ≤200ms. Powered by DC 6-14V with a maximum current of 70mA, the device features two input ports for external LED control, dual-color LED indicators (red and green), and an integrated beeper for feedback. Designed for robust performance, it operates efficiently in temperatures ranging from -20°C to +65°C and 10% to 90% relative humidity (non-condensing).