声级计, 93.2 dB, 94.8 dB, 0.8 dB, 0 °C, 50 °C
This precision calibrator is compatible with any instrument with a 1/2" diameter mic element housing. Essential for maintaining the accuracy of any portable sound level meter, this unit generates a precise 1KHz tone, at exactly 94dB. Single slide switch provides on/off/battery test functions