GD151A / GD151B Digital Decibel Meter — Portable Sound Level Meter 30-130dB, 2.4 inch Backlight, Fast/Slow Response, A/C Weighting

Overview: Compact, battery-powered digital sound level meter offered in two variants: GD151A (A-weighting) and GD151B (A- and C-weighting). Designed for quick measurements with a 2.4 inch backlight display and selectable fast/slow response modes. Key functions: Fast/slow time-weighted selection; 2.4 inch backlight display; temperature unit selection °C/°F; auto power off (10 minutes); data hold; max/min capture; A/C weighted selection (only GD151B); low battery indication. Technical specifications: - Sound range: 30-130dBA(GD151A) - Sound range: 30-130dBA or 30-130dBC (only GD151B) - Frequency: 30Hz-8KHz - Dynamic range: 50dB - Sound Accuracy: ±1.5dB(94dB@1KHz); ±5dB (94dB@8KHz) - Frequency weighting: A weighting (GD151A) - Frequency weighting: A weighting,C weighting(only GD151B) - Time weighting: fast 125ms; slow 1sec - Temperature range: -20°C-60°C(-4°F-140°F) - Temperature accuracy: 0°C-45°C(32°F-113°F)±1°C/2°F; Other ±1.5°C/3°F - Humidity range: 0.0%-99.9%RH - Humidity accuracy: 20%-80% ±5RH; Other ±6RH - Auto power off: 10 minutes - Power: 3*AAA battery(not include) - Item size: 142*58*26mm - Item weight: about 114g Package contents: 1*Sound level meter, 1*Manual, 1*Bag, 1*Box This portable decibel meter is suitable for general noise monitoring and quick on-site SPL checks, offering easy-to-read backlight display and essential measurement functions in a lightweight form factor.