RKI is proud to introduce the smallest and most affordable 4-gas monitor in the world, the HAWK. Weighing only 170 grams and about the size of a business card, the HAWK simultaneously monitors Combustibles, Oxygen, Carbon Monoxide, and Hydrogen Sulphide. The HAWK is armed with standard features such as a vibration alarm, auto calibration, data logging, rechargeable NiMH battery pack, STEL readings, peak hold and auto backlighting on the large LCD display on alarm. It even tells the time! All of these controls and features are operated through 3 simple glow-in-the-dark buttons. Utilising either the standard charger or datalogging /charger station, the NiMH battery pack will operate for 18 hours and fully recharge in 90 minutes.