The Kinghelm KH-RFID-20-BQ is a compact RFID (radio frequency identification) device with RF Chips RoHS (Restriction of Hazardous Substances) certification. This device is ideal for applications such as access control, asset tracking, and other identification processes. It has a read range of up to 20 meters and an operating frequency of 125kHz. This RFID device is available with a 20-bit or 12-bit memory size, and it is compliant with the ISO 11784 and 11785 standards. Additionally, it is equipped with a RoHS label to ensure it is free from hazardous materials such as lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, and polybrominated diphenyl ethers.