The BL-RT3070-3B is a 150Mbps wireless USB module that supports IEEE 802.11n, 802.11g, and 802.11b standards. It has a USB 2.0 interface and works in the 2.4-2.4835GHz frequency range across 1-11 channels. The module supports data rates up to 135Mbps and has a transmission power of 15-19dBm depending on the data rate. It can transmit up to 100 meters indoors or 300 meters outdoors depending on the environment.