Check the listing for details. Spark Plug Tester 3-Holes Adjustable Frequency Spark Tester 200-9000rpm. Condition: New. Listed at 54.99 USD. Digital display high frequency adjustable spark plug ignition testerSPT301 is a professional digital display high-frequency adjustable spark plug ignition tester, which can simulate the real speed with high precision, digital precision control, and test the performance and ignition intensity of the spark plug. The test frequency is up to 9000 RMP, five holes can be compared at the same time, and the operation is simple and convenient.SPT301 has excellent compatibility and is compatible with all crankshaft engines and motorcycle spark plugs. The LCD display can be digitally controlled precisely, which greatly improves the accuracy of the test and the work efficiency of the operator.Features✔Working frequency is up to 9000 rpm, the higher the frequency, the stronger the spark plug✔ Digital screen display, more precise control✔ Compare five holes at the same time to improve efficiency✔ High-precision simulation of real speed✔ Simple operation, plug and playWarm Noted: Turn on the power switch and press the up and down buttons to adjust the working frequency.The higher the frequency, the higher the intensity of the spark plug.Do not unplug or plug the spark plug when the power is on.If you want to insert or remove it, you must first turn off the power;When the spark plug is working, the voltage reaches tens of thousands of volts.Do not touch it with your hands to avoid harm to your body. Steps for usage1. Insert the ordinary spark plug into hole 1, and insert the spark plug to be tested into hole 2/3/4/5;2. Connect the power supply;3. Turn on the power switch and adjust the working frequency;4. Compare and observe the working status of spark plugs.Specification:Input power: AC 110V±10% 50Hz / 60HzOutput power: DC12V±2 1ASimulation speed: 200~9000 rpmAmbient temperature: 0℃~+45℃Relative humidity: ＜85%Host size: 200mmx118mmx118mmWeight: 500gKindly Noted: Turn on the power switch and press the up and down buttons to adjust the working frequency.Package Included:1pcs * Car Spark Plug Tester main unit1pcs * Power supply1pcs * User manualPaymentShippingReturnFeedbackAbout usPaymentPayment: 1. We accept PayPal only.2. Credit card (Visa, Eurocard/MasterCard, Amex, and Switch or Visa/Delta) payment can be accepted ONLY through PayPal (You don't need a PayPal account)!3. Other payment methods (Bank transfer, Cheque, etc.) are NOT acceptable !4. Please make the payment within 3 days. ShippingShipping:As for delivery,We provide economic shipping and express shipping. Express shipping ,such as,Fedex, TNT, UPS, DHL and EMS etc. Excellent Services are used as per customers' request. But pls be known that different shipping service means different shipping charge and shipping time! All packages will be added with a tracking number. The item will be shipped directly from the factory! We will try our best to give customers good and pleasant parchasing experience!!! Welcome your any-time order!!!ReturnReturn policy:Warranty: 1. We provide 12 months' free repair for the defective items (excluding items damaged and/or misused after receipt), and 3 months' for the accessories. 2. Defective items MUST BE reported and returned to us within the warranty period (and in the original packaging, if it is possible for you). You must tell us what the defect is and give us your eBay ID. WE DO NOT REPAIR OR REPLACE ITEMS WITH AN EXPIRED WARRANTY. For international buyers For those international buyers, pls be known that import duties, taxes and charges are not included in the item price or shipping charges.The charges are the buyer's responsibility. Pls check with your country's Customs Office to determine what these additional costs will be before you bid.FeedbackFeedback:1. Your satisfaction is our priority. Please contact us if you have any problem or dissatisfaction.2. We will resolve every issue for you and amke every effort to meet your satisfaction.About usAbout us： 1.Our customer-oriented service strives for good buying experience. 2.Please feel free to contact us via eBay message once you have any question. We will reply you within 24 business hours. 3.Business time: 8:30-18:00 from Monday to Friday 9:00-12:00 Saturday