Williams Sound PLM FSMP Hearing Loop Field Strength Meter

Williams Sound PLM FSMP Hearing Loop Field Strength Meter The Hearing (Induction) Loop Field Strength Meter is an essential tool for assessing the performance of induction loop systems during installation and maintenance. Equipped with user-friendly controls, it provides precise dB readings, enabling installers and users to calibrate and monitor magnetic loop signals effectively. By measuring RMS signal energy, the meter ensures the loop's audio frequency complies with the global IEC 60118-4 standard, delivering reliable performance and optimal sound quality for users with t-coil-enabled hearing aids and cochlear implants. Features Conforms to IEC 60118-4: 2006 standard Adjustment possibilities for two test ranges: background noise field strength 3.5mm Headphone Jack for real time background noise monitoring Low-Battery indicator Color-coded display of field strength Lightweight, Ergonomic Design RMS-measuring range calibrated to 400mA/m = 0dB Switchable A weighted filter Specifications True RMS: 125 ms average time Measuring range: +6 dB -40 dB (0 dB = 400mA/m) Power supply: 2x 1.5V AA batteries Display: LED Battery status control Field strength: LED-Scale (1dB resolution) Output: 3.5 mm stereo headphone jack with volume control Dimensions: 3.3″ x 5″ x 1.4″ (83 x 126 x 35 mm) Weight: 6.0 oz. (170 g) (incl. batteries) Warranty: 2 years Warranty 2 Years