UHF RFID ONQ Reader Modules, reader tag sensing distance up to 20 meters(with the 9dBi antenna), reading speed up to 300 Tag per second. ISO18000-6c compliant product, power 1W, operating voltage 3.6V~5.5V, interface of UART TTL, and simple AT instructions. Designed for various RFID products(eg. Access permission, stock take, product check, patrol management, automatic elevators ...etc.) With its small size, it is especially designed for handheld reader devices.