1.5W/10W, 433Mhz,option of 450-470Mhz; 2.range is 2-20KM in the open site 3.TTL/RS232/ ... rate is 10-2.4. Long transmission distance Within the range of visibility, It can transmit >20km when the antenna height is ... improve the reliability of our modules. JZ878 Rf transmitter 433MHZ,options of 450-470MHZ,5/10W,12V,5-20km range wireless broadcasting module ...