The HXG-2d combustible-gas leak detector from SENSIT Technologies is ATEX certified when used with approved batteries. The gas detector features a low-power, semiconductor sensor for measuring combustible gases in the ppm and percent LEL range. The ppm readings autorange to percent LEL when the concentration exceeds 990 ppm (2 percent LEL methane). Optionally, readings can be set to a resolution of 0.1 percent LEL. 888/473-6748; www.gasleaksensors.com.