TA657 Series Mini Sound Level Meter

The TA657A is a compact and high-performance digital sound level meter designed with an advanced miniature condenser microphone sensor and a high-precision operational amplifier chip. It accurately converts ambient sound into electrical signals, which are processed through a professional band-pass weighting network and intelligent microprocessor, delivering reliable measurement results displayed clearly on a bright LED digital screen. Compared with conventional sound level meters, the TA657A features a smaller size, greater portability, and easier operation, making it ideal for real-time environmental noise monitoring. With a wide measurement range of 30~130 dB and a high resolution of 0.1 dB, it provides accurate and dependable measurements for both general-purpose and professional applications. The meter utilizes dBA frequency weighting to closely match human hearing characteristics and supports both FAST and SLOW time-weighting modes to accommodate various noise measurement requirements. The TA657A is equipped with Data Hold and Maximum Value (MAX) functions for convenient data recording and analysis. It features a built-in 3.7 V 220 mAh rechargeable lithium battery and a Type-C charging interface for easy and efficient charging. An automatic power-off function activates after 15 minutes of inactivity, helping to conserve battery power and extend operating time. Widely used in environmental monitoring, industrial facilities, urban noise control, construction sites, transportation systems, marine applications, schools, hospitals, offices, and residential environments, the TA657A provides an efficient, accurate, and reliable solution for noise measurement and monitoring.