BrassCraft’s handheld Safety+PLUS portable gas leak detector can pinpoint natural gas, methane, propane and butane gas leaks in appliances, piping and canisters. It features an embedded microprocessor with a low-battery alert. The tool is powered for about 1,000 min. of operation by two AA batteries. Green, yellow and red lights illuminate to indicate the degree of gas detected. A self-calibrating sensor ensures consistent product performance. A protective black cap is designed to protect the sensor from damage and also reduces the risk of it becoming contaminated.