■The performance meets the requirements of GB/T 3785 and IEC 61672 level 2, and the measurement results are in compliance with the standard.

■The preamplifier is removable, the microphone and the main body can be connected by an extension cable, and the measurer is reliably away from the noise source, making the measurement safer.

■The extension cable comes standard with 3m and can be customized by the user, with a maximum length of 50m, which is suitable for long-distance measurement of vehicle inspection.

■A sound level 30-130dB, C sound level 40-130dB, divided into three levels of low/medium/high range, hand switching, wide range coverage.

■128 × 64 dot matrix liquid crystal display, resolution 0.1dB, with overload, under-range, low battery voltage alarm signs.

■It has an RS232 serial communication port, outputs ASCII codes, and can be used as a noise data collector to access PC software for analysis and processing.

■DC logarithmic and AC linear analog outputs are provided to facilitate access to external recording and analysis equipment.

■The 4-section No. 5 battery can work continuously for 16h, handheld and portable, suitable for station mobile operation.