Teywa Communication Technology Co., Ltd, established in Shenzhen China in 1992, is a Hi-Tech Company engaged in developing small-type mobile data application units. It had been focusing on application development and system integration around mobile data application for three years since it was constructed. The independently developed GSM/CDMA DTU (Data Transmission Unit) integrated three kinds of transmission channels respectively such as UDP, TCP, SMS and multiple standard baud rates such as 2400, 4800, 9600, 11400, 19200, 28800, 38400, 57600, 115200, 230400 etc. these characters are available for application devices to achieve the best transparent transmission efficient and ensure reliability and stability.

TYW DTU include GSM/GPRS and CDMA series can be used in many fields such as cargo transportation, electrical power monitoring and transportation etc. In a word, TYW DTU series are suited to remote monitoring in automatic control system in field to promote management efficient and decrease cost¡£It was applied successfully in financial and traffic management system in Guangzhou of China recently. Our engineers are expanding the other electrical application in China¡£ With the development of wireless network, the GPRS wireless access rate of GPRS and CDMA is enhanced to 115Kbps and 153. 6Kbps respectively. It can fully satisfy the baud rate need in industry automatic control system although it is unavailable for internet surfing. Considering the diversity of wireless environment, TEYWA DTU Series not only provide internet wireless access solution but also SMS solution for backup to ensure the user data transmitted to the control center intact.