The ToxiRAE Pro is the world’s first wireless personal monitor for toxic gases and oxygen deficiency / enrichment. Boasting a selection of over 20 intelligentinterchangeable sensors, the ToxiRAE Pro can detect a broad range of gases - from carbon monoxide, hydrogen sulfide, andoxygen to ammonia, chlorine, and phosphene. The ToxiRAE Pro’s plug-and-play intelligent sensors store calibration data, so if you need to monitor one gas one day and another gas the next, swapping the sensors in your ToxiRAE Pro is all it takes. Name: ToxiRAE Pro Certification: ATEX/IECEx (Europe+India) Base Unit with Sensor: Hydrogen (H2) sensor (0-1,000 ppm, 10 pm res.) Datalogging: Continuous datalogging capability (3-month @ 1-minute intervals; user-configurable) Wireless Capability: Empty Non-wireless (cannot be upgraded to wireless) Kits: Monitor with standard in-the-box accessories