Kytence Inc. was set up in Beijing by a group of engineers who worked in a globally renowned semiconductor company with years of wireless technology experience. The Kytence team consists of experts in base band, RF, software, testing and technological support. We are outstanding in protocol stack, software function, RF performance and product reliability. K91 GSM/GPRS Module is targeted to embed DTU function into various end products. It supports GSM voice communication, GPRS data transfer, embedded TCP/IP stack. DTU function directly enables free data transfer between the serial port and the Internet without any additional effort. Kytence provides reliable service to customers with our R&D essence and technological support.