This all-in-one kit pairs a REED R8080 data-logging sound level meter with a matching R8090 acoustic calibrator, so you can measure noise levels and verify accuracy in the field without extra equipment. The meter offers triple-range measurement, fast/slow response, and onboard memory for up to 64,000 logged readings, all housed in a rugged foam-fitted carrying case with a windshield ball and batteries included. Ideal for industrial, construction, and workplace-safety noise audits.