Check the listing for details. Ion Science ARA Single Gas O2 Standard Detection Meter. Condition: New. Listed at 180.25 USD. Oxygen, Detection Range: 0 to 25%. Each wearable personal detector provides live readings and instantaneous alarms to alert you when particular gas levels exceed set safety levels. These meters are an ideal choice for applications such as site-wide safety, confined space entry, plant shutdown processes, and first response safety. A single button ensures ease of operation, and the self-test feature tests the audio, visual, and vibrating alarms to provide confidence before use. Additional features include adjustable high/low alarms, lifetime remaining countdown, and user-configurable calibration and bump-test reminders. IP67 Rated. Meets CAN/CSA C22.2 No. 60079-0:19, CAN/CSA C22.2 No. 60079-11:14, ANSI/UL 60079-0 7th ed., ANSI/UL 60079-11 6th ed.