Check the listing for details. Car Engine Cylinder Stethoscope Auto Diagnostic Noise Tester Detector Test Tool. Color: black, Condition: New. Listed at 46.25 USD. Car Engine Cylinder Stethoscope Auto Diagnostic Noise Tester Detector Test Tool Note: This item does not include batteriesFunctionsThe Car Cylinder Stetoscope can be used as follows: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.Parameter1. Frequency Range：100Hz-10kkHz2. Input Impedance：＞15MΩ3. Ambient Noise Permitted：100dBOperation1. 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 Volume/Power Switch to switch the stethoscope on and the Signal LED lights to indicate that the unit works.5. Adjust the Volume/Power 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 Volume/Power 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. We accept payment by PayPal only !Payment should be completed within 7 days after buyer places the order,or else an unpaid case will be opened in order to cancel the transaction. If you can not pay in time, please contact us. eCHECK from PayPal will only be processed once the payment clears.All of the items will be shipped to buyer's EBAY address,please confirm your address on Ebay before you buy.Your order will be usually shipped out the same or next business days once the payment is made and cleared. All items will be checked before packing. All items are new and of high quality. Item will be shipped within 1 business days upon receipt of payment, excluding weekends and public holidays. If to USA,we will ship your order by USPS,it will take about 7-10 working days to you,and you can track it on line. If to other country,we will ship your order by China Post or Singapore Registered Air Mail,it will take about 14-21 working days to you,you aslo can track it on line. Delivery time is about 14-28 business days and it may take up to 8 weeks to some European countries and South American countries due to strict custom inspection. We ship worldwide. Shipping fee include packing, warehouse, distribution, order handling and processing costs. We offer combined shipping discount on Shipping & Handling. Please note that some countries will have custom duty or tax for certain items. It is the buyer's responsibility to pay all endued custom duty or tax. We are not responsible for any custom duty or tax since our price do not include this charge. 30-day Warranty with Exchange for defective, malfunctioned, incorrect or parts-missing items. Please notify us and return the item with all parts and accessories packed and marked "FOR EXCHANGE" within 14 days of receipt. If defective, malfunctioned or parts-missing items are no longer available, a refund may be issued. All returning postage costs will be the responsibility of the buyers under all circumstances. If you encounter any problems about anything, please feel free to contact us and we will do our best to assist you solve the issue. If you are not satisfied in anyway, please feel free to let us know and give us a second chance to correct it before you decide to leave any neutral or negative feedback. Please contact us through eBay link if you have any questions. We will reply you within 24- 48 hours. Please check you spam mail if no response for 48 hours.