... integrated company. Our products include laser distance meter,infrared thermometer, anemometer, sound level meter, noise meter, vibration meter, ultrasonic thickness gauge, film/coating thickness ... simulative ear)sampling frequencytwice/smicrophone1/2 inch capacitive microphoneMAX holdauto inductive backlightlow power displayauto power offpackageblister+ cartonpower supply9V battery(6F22)dimensions57 ...