J&N Enterprises (USA) TrackIt® III CGI (Combustible Gas Indicator) with its durable design and easy operation wile make finding gas leaks fast and accurate. The large bright LCD display shows all gas concentrations simultaneously fulfilling any leak surveyor confined space entry requirements. A barhole test feature helps accurately locate below ground leaks High resolution (0,1 % LEL) in combination with the high volume rotary pump helps to quickly locate hard to find leaks. At gasleaksensors.com you can find out more about this product. TrackIt® III CGI is UL approved and ATEX pending.