The 540 series probes are 3" shorter in cable length
Measuring range: -76° to 257°F
Weight 1oz / 28g Dimensions 0
stainless steel case prevents moisture from entering into
easy-to-read digital display that shows the current temperature reading
Graphic Display Sound Meter electrical-test The 540 series probes areFeatures 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