The GMI9752U-32DB is an electret condenser microphone with solder pads, RoHS compliant, manufactured by INGHAi. It is a low-noise, ultra-low-power microphone with excellent sound quality. It is capable of capturing signals from up to a distance of 30 centimeters, and has a frequency response of 20Hz-20kHz. The size of the microphone is 32.0mm x 4.5mm, and the output sensitivity is -44dB ±3dB. It is suitable for industrial applications, such as industrial monitoring, voice recognition, and sound testing. It is RoHS certified, meaning it is free of lead, cadmium, and other hazardous substances. The GMI9752U-32DB can be used for a variety of applications, including voice recognition, acoustic testing, and voice-guided systems.