Graphic Display Sound Meter grow-light-ballasts 4 dB (ref 94 dB

4 dB (ref 94 dB @1 KHz)

Packing: 25 units per case

It features multiple modes of action from metabolites produced during fermentation

Includes citric acid to aid in absorption

Sterilized grain and substrate mix to meet mushroom nutritional needs

Graphic Display Sound Meter grow-light-ballasts 4 dB (ref 94 dBFeatures a large bar graph display, A & C decibel frequency weighting scales, min max, peak, fast or slow response, AC or DC output, auto power off, low battery indicator. Covers 30 to 130 dB in the A & C scales with a resolution of 0. 1 dB and an accuracy of 1. 4 dB (ref 94 dB@1KHz). Comes ready to use with a windscreen, 9V battery, instructions, and a foam lined hard shell carrying case. N. I. S. T. Traceable Certificate of Calibration available, or