The WiNRADiO ERD-1500 Electromagnetic Radiation Detector is an exceptionally efficient "RF Sniffer" developed to quickly and reliably locate sources of electromagnetic interference. The detector contains a miniature wide-band antenna with a quality amplifier and high-performance Schottky barrier detection diodes for maximum sensitivity. The detector features optical (LED) and acoustic (piezo speaker) indication. The brightness of the indicator LED and the pitch of the audible tone will increase proportionally with the strength of the detected signal, making it simple and easy to locate the interference source.