StarTech.com Handheld Digital Sound Meter w/Large LCD, Noise/Decibel Level Reader for Server Rooms/Offices, Audio Monitor, 30-130dBA Range - Handheld digital noise meter; 30 to 130dBA range; +/- 1.5 decibels accuracy - IP54 rated for dust/water resistance - Precise sound reader w/0.1dB resolution - Data hold function - Ideal for measuring loudness levels in server room/data center/office: