RKI offers the smallest and lightest four-gas monitor in the world, the GX-2009. Weighing only 4.6 ounces and fitting in the palm of your hand, the GX-2009 simultaneously monitors and displays combustibles, oxygen, carbon monoxide, and hydrogen sulfide. The GX-2009 represents the latest evolution of gas detection technology. Advancements include dual audible alarm ports and alarm LEDs on three sides of the instrument, so that alarm conditions are obvious from multiple perspectives, especially in high noise environments. It also has a waterproof and dustproof design with an IP 67 rating, an impact resistant rubber over-mold body that is Rfiresistant, and a large capacity data logging system included as a standard feature. Other standard features are vibration alarm, autocalibration, calibration lock out or reminder control, STEL / TWA readings, peak hold, auto backlighting at alarm on a large LCD display, and it even tells the time. All of these controls are operated through two simple glow-in-the dark, glove friendly buttons.