Established in 2005, Gauto Ltd is a professional manufacturer that specializes in R&D and supplies auto mobile maintenance equipmentsin onlines sales. Gauto strives to provide a solution for a better vehicle maintenance and offers Gautoprobe, Singsingprobe, and Relay Circuit Tester. Watch the pulse with the LEDs. All automotive signals are displayed effectively on nine LEDs. Completely safe for even the most sensitive components. The state-of-the-art technology used in the Gautoprobe, lets you work safely with all sensors and car ECUs. One simple test for checking all circuits. The powerful logic probe can check for open circuits, short circuits and other defective electrical connections. Voltage, Frequency or duty modes. You can alternate between voltage, frequency or duty modes at the push of a button while the Gautoprobe is in use.