This handheld sound level meter measures noise from 30 to 130 dBA with A-weighted frequency response, giving accurate readings for workplace, traffic, or environmental noise checks. The Bluetooth variant adds wireless data logging of up to 20,000 readings straight to a companion app, on top of standard max/min capture, an audible alarm, and a backlit display. It's built to be compact and portable for quick spot-checks by safety officers or facility staff.