Features 1. It can quickly detect the mechanical noise emitted by diesels engines, underpan and car engine, and accurately locate the fault. 2. Six channels of drawing, sound and light synchronization. Select the channel you want to receive and send the sound to the headphones. 3. This Electric Stethoscope maintenance tool is a high performances which is particularly suiable for use in noise detection machine. 4. LED light indicates the signal strength of the active channel, user-friendly. The detector is highly sensitive and the sound volume pickup earphone can be controlled by adjusting its volume control. 5. Suitable for automobile, truck, machine, diagnosis sound cylinder, quick fault location diagnosis. it can be used any time, anywhere. Specification Material: ABS Color: Black Package Includes: 1 x Detector