Dependable Function: Carefully constructed, this unit maintains stable readings through quick detection methods Versatile Applications: With 31.5Hz 8KHz frequency response and auto power saving after 5 minutes, it works well for needs from childcare spaces to factory areas while conserving energy Compact & Robust Build: Made from strong, this small noise measuring tool ( 4.9x15.5x2.5cm) ensures easy transport to different places including construction zones or outdoor activities Bright LCD Display: The backlit screen shows current noise readings with updates double per second, allowing effortless viewing in low light for users of any skill Effective Noise Measurement: This digital noise meter uses advanced sensing technology with a measurement capacity of 30 130dBA, Manufacturer: Xjdzineq