Radius BZ1, LEL (Pentane), CO, H2S, O2, SO2, PID, With Integral Pump, ULCSA, Wireless Enabled, English. The rugged, transportable Radius BZ1 provides an industry-leading run time of 7 days (168 continuous hours) while excelling at hazard communication, connectivity, and ease of use. When a gas hazard occurs, the Radius BZ1 ensures that workers in industrial environments not only know that the instrument is alarming, but why, thanks to distinctive audio and visual cues and an extra-large display. Custom alarm action messages allow workers to focus on taking appropriate action depending on the present gas level.