Seeed Studio 109990003 - RF Explorer Power Limiter is a custom device designed from scratch to be the perfect protection against strong RF fields.
Seeed Studio 109990245 - HackRF One, from Great Scott Gadgets, is a Software Defined Radio (SDR) peripheral capable of transmission or reception of radio signals from 1 MHz to 6 GHz. It covers many licensed and unlicensed ham radio bands.
Seeed Studio 114991829 - RF Explorer ISM COMBO+ is a powerful, high performance digital spectrum analyzer covering the 1GHz frequency range starting at 50KHz, and 2.35GHZ to 2.55GHz for scanning the popular 2.4GHz band.
Seeed Studio 114992756 - RF Explorer 6G WB PLUS Slim is a powerful Spectrum Analyzer model, covering the full 6GHz range starting at 15MHz up to 6.1GHz with no gaps or limitations, and up to 7.5GHz with optional extra license.
Owon XSA1015-TG - spectrum analyzer from 9 kHz up to 1.5GHz
Owon XSA1032-TG - spectrum analyzer from 9 kHz up to 3.2GHz