Shanghai Sunray Technology Co., Ltd is biggest radio module manufacturer in China and is dedicated to short-distance wireless module production. Our product works on ISM frequencies (433MHz/470MHz/868MHz/915MHz) with low power consumption. It provides UART TTL (or RS232/485) serial port to be connected with your devices like computers, handheld terminals, remote controllers or display facilities. Signals will be transmitted transparently from one module to another, and the transmitting distance could be up to miles. With our low cost RF modules, you are able to setup a simple wireless transmission efficiently instead of the complicated wired connection. If you are involved in business like Remote Control System, Automatic Meter Reading, Environment Monitoring, and Intelligent Locating etc, you may discover a new partner, or maybe a new opportunity. Contact us now.