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. Parts-per-million readings auto-range 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.