The RAE Systems MultiRAE is a versatile portable gas detector that supports over 25 intelligent, interchangeable sensors, including PID for VOCs (0.1–5000 ppm), NDIR for combustibles and CO₂, and electrochemical sensors for toxic gases and oxygen. It is designed for industrial hygiene, personal protection, leak detection, and HazMat response.

The MultiRAE features a large display, five-way alarm notification (audible, visual, vibration), and continuous data logging. Its wireless capability provides safety officers real-time access to instrument readings and alarm status from any location, enabling faster incident response. The instrument is easy to maintain with field-replaceable sensors, pump, and plug-and-play battery, and it is fully compatible with the AutoRAE 2 automated test and calibration station.