AR814 数字噪音计是一款广泛应用于多种场景的噪声测量仪器。它采用先进的电声技术和数字处理系统，能够精确测量环境噪声水平。该设备配备1/2英寸电容式麦克风，测量范围为30~130dBA和35~130dBC，能够满足从安静环境到高噪声场景的测量需求。其测量精度为±1.5dB，频率响应范围为31.5Hz至8.5kHz，能够准确捕捉不同频率的噪声。

AR814 数字噪音计具备A/C两种频率计权模式，用户可以根据测量需求选择合适的计权方式。设备还支持Fast/Slow时间计权模式，能够快速响应瞬时噪声变化或提供平稳的噪声读数。此外，该设备具备最大值锁定功能，可记录测量过程中的最高噪声值。

在使用方面，AR814 数字噪音计操作简便，配备清晰的LCD显示屏，能够实时显示噪声数值。设备还具备低电和过载提示功能，确保用户在使用过程中能够及时发现并处理问题。其电源为9V电池，重量仅162g，尺寸为198×70×29mm，便于携带和操作。该设备适用于工厂、学校、办公室、交通道路、家庭、音响等多种场合。

The AR814 Digital Noise Meter is a versatile noise measurement instrument widely used in various scenarios. Equipped with advanced electroacoustic technology and digital processing systems, it can accurately measure environmental noise levels. The device features a 1/2-inch condenser microphone with a measurement range of 30~130dBA and 35~130dBC, making it suitable for measuring noise in both quiet and high-noise environments. Its measurement accuracy is ±1.5dB, and the frequency response ranges from 31.5Hz to 8.5kHz, allowing it to capture noise at different frequencies.

The AR814 Digital Noise Meter offers A/C frequency weighting modes, enabling users to select the appropriate weighting for their specific measurement needs. It also supports Fast/Slow time weighting modes, which can quickly respond to instantaneous noise changes or provide a smooth noise reading. Additionally, the device features a maximum value lock function that records the highest noise level during the measurement process.

In terms of usability, the AR814 Digital Noise Meter is equipped with a clear LCD display that shows real-time noise values. It also includes low battery and overload warning functions, ensuring that users can promptly identify and address any issues during use. Powered by a 9V battery, the device weighs only 162g and has dimensions of 198×70×29mm, making it portable and easy to operate. It is suitable for use in factories, schools, offices, traffic roads, homes, and audio systems.