Features: Brand new and high quality. Reading Distance: With this antenna, the UHF reading distance is about 20 cm, which depends on the card reader's performance, test environment, and other factors. Good UHF Test: This antenna is suitable for low-cost UHF testing. R2000, ST25RU3992, ST25RU3993, and other common UHF reader chips can use this antenna, and the test results are good. Wide Band Range: The polarized antenna is suitable for readers of European 865-868MHz, American and Chinese 902-928MHz. Widely Used: The antenna module can be widely used in intelligent production lines, warehouses, 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: Circular Polarization. Bandwidth: 26 Gain: 5 dBi VSWR: ≤1.4 Half-Power Angle: 70° Input Impedance: 50Ω Power: 100W Size: Approx. 4.5x4.1x0.3cm/1.77x1.61x0.11 inches Reading Distance: Approx. 20 cm Working Temperature: 40-70 degrees Please Note: 1. Please allow 1-2 cm error due to manual measurement, please ensure you do not mind before ordering. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 Set of UHF Reader