Operating Frequency: UHF RFID reader writer supports Chinese National standard (920-925MHz) and American standard (902-928MHz), compatible with ISO 18000-6C standard. Contactless Reading and Writing: The maximum reading distance of the tag is 50cm (19.7in), and maximum writing distance is about 20cm (7.9in). Multipurpose: Suitable for personnel access control, file management, and backend electronic tag reading, writing, authorization, formatting, and other operations. Easy to Operate: Compact integrated card reader for short-range identification or backend issuer management. Designed for indoor desktop placement and user-friendly operation. Applications: Widely used in logistics and warehousing management, intelligent parking management, attendance management, catering management, swimming pool management, product anti-counterfeit detection, and consumption management systems. Item Type: UHF Card Reader Material: ABS Operating Frequency: Chinese National standard (920-925MHz), American standard (902-928MHz) Tag Protocol: ISO18000-6C (EPC gen2) Frequency Hopping Mode: Broad spectrum frequency hopping (FHSS) or fixed frequency settable by software Antenna Parameters: 2dBi circularly polarized antenna (built-in) Output Power: 12.5dBm - 26dBm (software adjustable) Reading Distance: Up to 50cm (19.7in), depending on transmit power, antenna type, tag type, and environment Writing Distance: Up to 20cm (7.9in), depending on transmit power, antenna type, tag type, and environment Operation Mode: Active mode, passive mode, answer mode (not recommended) Power Interface: DC +5V Communication Interface: USB virtual keyboard Operating Temperature: -20°C to 55°C Storage Temperature: -40°C to 85°C Dimensions: Approx. 104 x 68 x 10mm (4.1 x 2.7 x 0.4in) Package Includes: 1 x UHF Card Reader 1 x Connecting Line