Lightweight noise dosimeter with 70–140 dB range, real-time clock, USB download, and support for multiple exchange rates and dose parameters.

GAOTek sound level analyzer is a Sound level tester, Sound Dosimeter, Noise level meter, Programmable Sound Level Meter, Integrating Sound Level Meter, Noise Dose Meter, Sound Analyzer.

This Auto Level has a 79 in ( 0.2 m) min focus distance, OEM ODM customized support, stadia ratio 100 and 0.0006 mi (1 km) double runievelling

This calibration sound level has a normal SPL 94 dB, 114 dB, operation normal frequency 1000 Hz + 1% and operating current 10 mA4.

GAOTek deep well sound indicator water level meter is a new patent designed and developed by using a new integrated circuit board.

GAOTek deep well sound indicator water level meter is a new patent designed and developed by using a new integrated circuit board.

This digital noise meter has a  frequency range 20 Hz to 8 KHz, Display Refresh Rate 1 Time or sec, and time weighting Fast, Slow, Impulse, Peak.

This Digital Noise Sound Level Meter has a power supply of battery 4 × LR 6 or external power, and display of 128 pixels × 64 pixels OLED.

This Digital Noise Sound Level Meter has sound level resoultion of 0.1 dB, power of 9 V battery and frequency sensing range of 31.5 Hz to 8 KHz.

This Digital Sound Level Meter is used in industrial noise surveys, machinery, vehicles, ships and etc

This Digital Sound Level Meter has resolution of 0.1 dB, accuracy of 1.5 dB, peak flag of 140 dB and measuring range of 70 dBA.

This Digital Sound Level Meter has internal data storage, waterproof of IP55, LCD display of 192 dpi and circular sensitivity of 0.31 in.