High Precision Digital Sound Level Meter YT311S

YT311S High Precision Digital Sound Level Meter, Measurement Range: 30–130dB Feature: 1. High-Precision Measurement: Equipped with a highly sensitive condenser microphone, it offers a wide measuring range of 30–130 dB, accurately capturing subtle sound variations for everything from home environmental testing to industrial noise inspection. 2. AC Frequency Weighting for Dual Scenarios: Features interchangeable AC Weighting modes. Use A-weighting for human ear response simulation and C-weighting for mechanical noise analysis, providing scientific data for any application. 3. HD Backlight LCD Display: Features an HD LCD screen with a built-in backlight function, ensuring crystal-clear visibility of decibels, whether you are working in bright sunlight or dark environments. 4. Ergonomic & Portable Design: Boasting a striking orange-and-black ergonomic design with non-slip side grips, it fits perfectly in one hand, allowing for effortless portable noise testing anytime, anywhere. Specifications: 1. Large HD FSTN display with full viewing angle; three-color backlight (green, yellow, red) 2. Sound level measurement range: 30–130 dBA, 30–130 dBC 3. Accuracy: ±1.5 dB (94 dB @ 1 kHz) 4. Frequency response: 30 Hz–8 kHz 5. Frequency weighting: A, C 6. Time weighting: FAST, SLOW 7. Sound level display via data bar 8. "OVER" range indicator 9. Features: Data hold, MAXMIN values, auto power-off (with disable option), low battery indicator, °C°F unit switching 10. Power supply: 3 x 1.5V AAA batteries (not included)