Founded in 2004, Shanghai Sunray Technology Co., Ltd is dedicated to design, manufacturing and marketing of compact short range radio modules and radio modems for rapid implementation of cable-free data links. Sunray wireless provide high-quality, cost-effective and easy-to-integrate RF products for operation in the license-free ISM bands at 403/ 433/ 470/ 868/ 915 MHz and 2.4 GHz. The products include a range of RF transceivers, RF modules, RF modems as well as complete AMR equipments & sys