Car Electronic Stethoscope Abnormal Sound Detector Mechanical Fault Diagnostic Tool Features 1. Rapidly detect the machine noise from a diesel engunes, an air cylinder or an automobile, and exactly find out the malfunction position. 2. Identify the abnormal noise from an engine or a motor to avoid accident. 3. Monitor the automatic assembly line to ensure proper operation. 4. Used in chemical industry to check whether the liquid in a pipe is flowing or blocked. 5. Detect abnormal noise in all kinds of boilers or reaction containers. 6. Monitor the working of all kinds of axletress. 7. Monitor the working of a ship. 8. Used in the maintenance of various vehicles. 9. Used in the maintenance of various household appliances. Specification 1. Frequency Range: 100Hz-10kkHz 5. Input Impedance: more than 15M Ohm 3. Ambient Noise Permitted: 100dB Operation: 1. Slide the battery cover out,install a 9V(6F22)battery, rejoin the cover. 2. According to the actual situation,select and install the long probe or the short probe. 3. Wear the earphone.Insert the plug of the earphone to the earphone jack. 4. Turn the VolumePower Switch to switch the stethoscope on and the Signal LED lights to indicate that the unit works. 5. Adjust the VolumePower Switch,a buzz sound indicates that the stethoscopeis good. 6. Lightly touch the probe with your hand,you will hear the response sound from the earphone,this means that you can begin your detection. 7. You can adjust the VolumePower Switch for a desired volume.Touch the end of the probe to the desired positions of the object which you want to detect.Pay attention to the change of the sound from the earphone.Finally you can locate the position where a certain noise come from.According to the experience and the relevant knowledge,you can find the early hidden trouble or the position where a malfunction exists. 8. Normally a short probe can meet your need,if necessary,you can use the long probe. Package list: H