Features: new and high quality Reading distance: Using this antenna, UHF reading distance is about 20cm, which depends on the performances of card reader, test environment and other factors. Good UHF test: This antenna is suitable for low-cost UHF test. R2000, ST25RU3992, ST25RU3993 and other mainstream UHF reader chips can use this antenna, and the test results are good. Broadband range: Polarized antenna is suitable for readers of European 865-868MHz, American and China 902-928MHz. Widely used: antenna module can be widely used in intelligent productions line, warehouse and personnel management. High quality: the antenna is made of high quality PCB and aluminum, which is a good substitute for the old antenna. Specifications: Material:Plastic Range:902-928MHz Polarization mode: Circulars polarization. Belt width: 26 Gain: 5 dBi VSWR:1.4 Half-power angle: 70o Input impedance: 50 Input power: 100W Size:Approx.4.5x4.1x0.3cm/1.77x1.61x0.11inch Read distance:about 20cm Working temperature:40-70degrees Package Includes: 1 Set UHF Reader note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.