Sound Level Meter Decibel Monitor Decibel Recorder Sound Level Tester USB Handheld for Schools for Hospitals for Factories             Feature:        1. Handheld sound level meter, with LCD display, supports backlighting, clear readings, intuitive display of data, no parallax.     2. Using high quality sensors, high measurement accuracy and stable performance, it is a professional decibel measurement tool.     3. It adopts dual analog signal output, the measuring range is 30‑130dBA, 35‑130dBC, and supports AC DC signal output.     4. Non slip silicone button design is comfortable to the touch, simple to operate, meets a variety of needs, and widely applicable.     5. Small and portable, suitable for factories, schools, hospitals, shopping malls, hotels, theaters, offices, road traffic, home audio.           Specification:    Item Type: Sound Level Meter  Material: ABS Product Model: HY-1361                   Measuring Range       30-130dBA 35-130dBC                 Measurement Accuracy       ±1.5dB                 Frequency Response       31.5HZ-8.5KHZ                 Dynamic Range       50dB                 AC Signal Output       √                 DC Signal Output       √                 Auto Shutdown Function       Short press the power button                 No Shutdown Function       Long press to boot until LCD flashes                 Low Voltage Display Function       √                 Overload Display       √                 Digital Display       4 digits                 Resolution       0.1dB                 Dynamic Characteristics       Fast/slow                 Microphone       1/2 inch condenser microphone                 Frequency Weighting Characteristics       A/C weighting                 Measurement Gear Selection       6 gears                 Maximum Lock       √                 LCD Refresh Frequency       2 times/sec                 Product Color       Ivory                 Application Scenarios: Volume measurement applications in various occasion such as factories, schools, hospitals, shopping malls, hotels, theaters, offices, road traffic home audio, etc. Battery: 4 x AA Dry Batteries (Battery Not Included)        Package List:    1 x Noise Meter (Battery Not Included)    1 x CD    1 x USB Cable    1 x Manual