The AUTOOL SDT50 Auto Smoke Leak Detector is a professional tool for detecting leaks in automotive piping systems. SDT50 Smoke Leak Detector Full system diagnostics. Overheat / Low Temp, Protection. SDT50 Smoke Tester Vacuum Leak Tester Compact and exquisite shape, it takes up no storage space,the whole machine weighs only 1.5kg, easy to carry.