Tru Pointe® 2100 Features & Benefits «Capable of detecting a 5 PS! Saki out of a 0.005" hols, 30 ta 40 feet away {depending on background noise}. «Capable of detecting ANY gas leaks, regardless of chemical property or concentration «Ideal for steam trap testing, detecting bearing wear, gas and valve leaks. Unaffected by wind or temperature fluctuations, other sounds or gases in the testament.