B7054-45-90 / 54-45-90 SENSOR TOXI 02 ToxiPro™ Single Sensor Reusable Gas Detector ToxiPro™ is a fully serviceable, reusable gas detector with real-time, peak, STEL and TWA readings as well as a black box recorder. ToxiPro™ features a loud 92 dB audible alarm, visual alarm and optional vibrating alarm. Replaceable battery gives up to 9000 hrs. of service, and one button operation plus button-activated backlit LCD display makes it easy to use. Sensor is also replaceable, and 3.9 oz. durable clear polycarbonate unit with thermalplastic elastic overmold meets IPX5/IPX7 water rating. Alarm and datalogging settings can be changed with optional BioTrak software (IrDA required).