SOUND LEVEL METER The Quest Edge 5 Noise Dosimeter is a cable-free personal noise dosimeter with Intrinsic Safety approvals from MSHA, SIRA (ATEX), CSA (US and Canada), and Simtars (IECEx) for use in potentially hazardous environments such as mines, petrochemical sites, and manufacturing facilities. The Edge eg5 noise dosimeter offers users a lighter, more ergonomic method to monitor noise levels with its compact contoured design, advanced feature set and intrinsic safety certification. Key Features: Compact, 3-ounce (85 grams) unit mounts easily to the shoulder Large display with easy-to-use interface provides crucial information at a glance Choose from three independent dosimeters that can simultaneously measure against separate industry standards, all in one compact unit MSHA, SIRA (ATEX), CSA (US/Canada) and Simtars (iECEx) Intrinsic Safety Approvals Includes: EDGE 5 dosimeter with 57-309 1/4" microphone, EdgeDock-1 Single Docking Station, (2) 53-613 windscreens, 53-753 Calibrator Adapter, 53-575 USB Cable, 17-646 Power Supply and 53-754 Storage Case.