RF Explorer – ISM Combo and Handheld Spectrum Analyzer 240 – 960 MHz and 2.35 – 2.55 GHz https://www.amazon.com/dp/B00H4B9A0E/ref=cm_sw_r_cp_api_i_PlLiDbYF7E5WQ Wide band coverage to all popular sub-1Ghz ISM bands and 2.4GHz band, including 315MHz, 433MHz, 868MHzand 915MHz, 2.4GHz WiFi, Zigbee, also …