Tenma 72-2680 Sound Level Calibrator

Standard 94 dB and 114 dB/1000 Hz sound calibrator, useful to calibratethe "Sound Level Meter" precisely.The 72-2680 from Tenma is a sound level calibrator. It is a useful tool tocalibrate the sound level meter. It is supplied with two alkaline types, DC 9Vbatteries (006P, MN1604 PP3).Frequency of 1000Hz (±5% tolerance)Sound pressure level range from 94dB and 114dB0.5 inch or 1-inch microphone and built-in battery test indicatorOperating temperature range from 0°C to 50°C12-month limited warranty (view Terms and Conditions for details)Features:A useful tool to calibrate the sound level meter preciselyFrequency: 1,000Hz ±5%Sound Pressure Level: 94 dB and 114 dB.Suitable Microphone Type: 0.5 inches or 1-inch microphone.Power: 2 PCs 006P DC 9V batteriesCalibration Procedures:Insert the microphone of "SOUND LEVEL METER" carefully all the way into thecoupler section of the 72-2680.Set the "Sound Level Meter" to a range suitable for measuring "94 dB" or "114dB".Set the "OFF/94 dB/114 dB" to "94 dB" or "114 dB" position. A pure 1,000 Hz toneis produced.Adjust the calibration VR (knob) of the " Sound Level Meter". Until that thedisplay reaches 94.0 dB or 114.0 dB exactly