Sound Level Pen

Its small size makes the Sound Level Pen super convenient for testing in a wide variety of sound meter applications. Auto-ranging with simple one-button operation. Press once to begin reading sound levels. Press the button a second time and the display holds the maximum reading, updating as new maximums are reached. Hold the button for 2 seconds to turn the unit off. Measures the 30 to 130 dB range in the "A" scale, with an accuracy of ±1.5 dB. The display provides 0.1 dB resolution, under range, over range and low battery indicators. The Sound Level Pen calibrates electronically to its own internal oscillator or external 2-Pt. Acoustical Calibrator 850016. Comes ready to use with two AAA batteries, instructions, calibration screwdriver and a windscreen. An N.I.S.T. Traceable Certificate of Calibration is available (at additional cost).Dimensions: 8" × 1½" × 1" (203 × 38 × 25 mm)Weight: 4.3 oz (122 g)U.S. Patent 7,270,006 Specifications Ranges Resolution Accuracy 30 to 130 d