1.ISM band 433/868/915MHz 2.RF Output Power:50mW 3.Dimension:45*30*10mm ... . ISM frequency band, It can work in 433MHz, 868MHz or 915MHz.2.Narrow-band RF IC based, 3FSK modulation, high efficiency ... from 25W to 10mW is available. 50mW 915MHmz RF module, 915MHz Wireless data transceiver