This wireless data transceiver works at frequency between 432MHz to 436MHz with output power 5W. Ultra-high sensitivity achieves under -129dBm. Built-in both RS232 and RS485 output interfaces, allowing those facilities using RS-232 and RS-485 interface to easily connect with PC and related equipment. By adjusting the parameters from internal software, it enables to minimize potential interference occurring from close frequency and suits the need for various data communication. This product features wireless data transmission which offers the best solution to replacing wire/cord transmission as it is difficult to achieve long distance transmission. The largest distance reaches around 20KM if a directional antenna works well with the transceiver. Relay transmission could be set to achieve data transmission remotely; the number of relay could reach maximum 10 stations aimed to achieve even longer distance.