The new MultiPro multi-gas detector from Biosystems provides real time readings of up to four gases with one button operation. An easy-to-read, backlit LCD display mounted on the front of the unit simultaneously shows readings for all gases being monitored, and both audible and visual alarms ensure optimum safety. MultiPro's single "Mode" button controls all operations, including auto calibration. The unit features a Calibration Due reminder and Sensor Span Reserve indicators for predictive maintenance. For maximum convenience and efficiency, all sensors are field replaceable. The unit includes O2 and LEL sensorsand choice of either a dedicated CO or H2S sensor, or a Duo-Tox sensor that measures both CO and H2S simultaneously.