Features Easy-to-Use Design: The RZ1359 Meter features a user-friendly interface, allowing for quick and effortless sound level measurements with just the press of a button Wide Measurement Range: Accurately measure sound levels from 30dBA to 130dBA, making it ideal for various applications, including environmental monitoring and quality control Comprehensive Frequency Response: With a frequency range of 31.5Hz to 8KHz, this Digital Noise Tester provides precise readings across a broad spectrum of sound frequencies Convenient Auto Backlight: The built-in light sensor automatically adjusts the LCD brightness based on ambient lighting, ensuring readability in all conditions Practical Monitoring Tool: Perfect for noise pollution evaluation, home theater calibration, health and safety compliance, and vehicle noise assessment, enhancing your sound quality control efforts Features: 1、This is an easy to use and handy Mini Sound Level Meter. 2、Designed for sound quality control that measures sound level from 30dBA up ~ 130dBA. 3、It has auto range, wide measuring and frequency range (31.5Hz ~ 8KHz), maximum hold, Frequency Weighting A and Auto Backlight. 4、Just pr one button readings are instantly displayed. A practical little tool great for noise pollution monitoring, home theater setup, health and safety compliance, vehicle noise testing, etc. 5、Auto backlight has a light sensor on top of LCD that detects environment lighting condition. Lighting display intensifies as the environment lighting condition gets darker. Specification: Features: This is an easy to use and handy Mini Sound Level Meter. Designed for sound quality control that measures sound level from 30dBA up ~ 130dBA. It has auto range, wide measuring and frequency range (31.5Hz ~ 8KHz), maximum hold, Frequency Weighting A and Auto Backlight. Just pr one button readings are instantly displayed. A practical little tool great for noise pollution monitoring, home theater setup, health and safety compliance, vehicle noise testing, etc. Auto backlight has a light sensor on top of LCD that detects environment lighting condition. Lighting display intensifies as the environment lighting condition gets darker. The darker the environment the brighter the illumination.Also, it it reads in dBA and provides windscreen to filter-out unwanted signals. Auto Power Off, Low Battery Indication, Maximum Hold Function Specification: Model: RZ1359 Measuring Range: 30 ~ 130dBA Accuracy: ±1.5dB Resolution: 0.1dB Frequency Range: 31.5HZ ~ 8KHZ Frequency Weighting: A Sampling Frequency: 2 times/sec Microphone: 1/2" Electret Condenser microphone Operating Condition Temperature: 0~40°C Humidity: 10~80%RH Storage Condition Temper Package List