The REED R8070SD is a Type 2 data-logging sound level meter with a built-in SD card slot, capable of logging readings automatically at user-selected intervals from 1 to 3600 seconds or storing up to 99 manual readings, then exporting them straight to Excel with no extra software. It covers 30-130 dB across Low/Med/High/Full ranges with A/C weighting and Fast/Slow response, runs on 6 AA batteries or an optional AC adapter, and is tripod-mountable for long-term monitoring. This listing includes a NIST-traceable calibration certificate.