--- product_id: 98627349 title: "Jayron Hour Meter Tachometer for Petrol Mower and Generator" brand: "nine-rong" price: "HK$366" currency: HKD in_stock: true reviews_count: 13 category: "N In E R On G" url: https://www.desertcart.hk/products/98627349-jayron-hour-meter-tachometer-for-petrol-mower-and-generator store_origin: HK region: Hong Kong --- # Programmable 8 engine patterns 0.1 H timing accuracy 0-20,000 RPM range Jayron Hour Meter Tachometer for Petrol Mower and Generator **Brand:** nine-rong **Price:** HK$366 **Availability:** ✅ In Stock ## Summary > ⚡ Stay ahead of the grind with Jayron’s ultimate hour meter & tachometer! ## Quick Answers - **What is this?** Jayron Hour Meter Tachometer for Petrol Mower and Generator by nine-rong - **How much does it cost?** HK$366 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/98627349-jayron-hour-meter-tachometer-for-petrol-mower-and-generator) ## Best For - nine-rong enthusiasts ## Why This Product - Trusted nine-rong brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact & Durable Design:** IP65-rated ABS housing with easy hook-and-loop or cable tie mounting keeps your meter safe and sleek. - • **Precision Timing Mastery:** Track total and job hours with 0.1-hour accuracy for flawless maintenance scheduling. - • **Real-Time RPM Monitoring:** Instantly monitor engine speed up to 20,000 RPM with customizable overspeed alerts to protect your equipment. - • **Maintenance Made Effortless:** SVC countdown timer flashes reminders for oil, filter, and spark plug changes—never miss a service again. - • **Tailored Engine Compatibility:** Choose from 8 programmable firing patterns to perfectly match your 2-stroke or 4-stroke petrol engine. ## Overview The Jayron Hour Meter Tachometer is a compact, IP65-rated device designed for petrol engines, combining precise hour tracking (0.1 H accuracy), real-time RPM monitoring up to 20,000 RPM, and programmable engine patterns. It features a resettable job timer, service countdown alerts, and a backlit LCD for clear visibility, making it an essential tool for proactive maintenance and engine performance management. ## Description Product Description NInE-ROnG has focused on product development and manufacturing in the fields of hour meter, battery indicator, multi-function meter，service for the garden machinery industry, outdoor power vehicle equipment, transportation vehicles.In addition, we are also committed to creating simple and practical day timers, night light, hygrometers and other products to add fun and security to our life. PRODUCT FUNCTION 1 Hour Meter (TOT) Function When the engine is off, the display shows the total running time of the engine and remains visible. The total hours max value is 99999 H（Accuracy：0.1 H/1 H). TOT hours are non-resettable. But automatic clearing when exceeding the maximum value 99999 H. 2 Service timers (SVC) Function Countdown tracking time, Reminding maintenance,Such as Air filter Replacement. Programmable maintenance interval time from 0-200H. When the maintenance time arrives,"SVC" icon will flash to remind you. 3 JOB timer (JOB) Function Used to measure the time of a specific job, such as changing the oil. By operating the button display, the JOB running time of the engine can be displayed and kept visible. JOB timer reading displays from 0 to 99,999 Hours. JOB timer can be reset. 4 Tachometer (RPM) Function When the equipment is working, the tachometer will record the RPM in real time currently.Range:0-20000 RPM. Has 8 different Programmable firing patterns. Programmable Alert RPM, red backlit display and warning icon flash to remind the engine speed is out of range. SPARK PLUG CONNECTION PRODUCT INSTALLATION&APPLICATION Wide Application Suitable for all types of gasoline engines 2 Stroke 1 cylinder/2 stroke 2 cylinder/2 stroke 3 cylinder/2 stroke 6 cylinder 4 stroke 1 cylinder/ 4 stroke 2 cylinder/4 stroke 3 cylinder/4 stroke 4 cylinder/4 stroke 5 cylinder/4 stroke 6 cylinder4 stroke 8 cylinder/4 stroke 12 cylinder Gas engines. SPECIFICATIONS Review: Great bit of kit - Great bit of kit fitted in seconds and gave a really stable readout. Excellent value for money. Review: Used on my paramotor - Bought for my paramotor to keep track of engine time used so I can service it and taco the use. Really easy to attach and works really well ## Features - Tach hour meter: Combines a non-resettable total hours counter with 0.1 H/1 H timing accuracy, a resettable JOB timer, live RPM, max RPM recall, an SVC countdown, and an RPM alert in one backlit LCD gauge - Petrol engine RPM gauge: Reads 0 to 20000 RPM from the spark plug signal; choose a 0.5 s or 1.0 s refresh and set an over-speed alert from 1000 to 20000 RPM - Eight programmable patterns: Supports common two-stroke and four-stroke spark engines; correct RPM depends on matching the pattern and the pickup wire turns - Maintenance tracking: SVC timer sets from 0 to 200 H and flashes the SVC icon at zero; the JOB timer resets after service so you can track oil, filter, plug, trip, or work-session hours - Jayron: Compact IP65 housing: No-splice inductive pickup wraps four to five turns around the spark plug lead and can be shortened to at least 1 m; the 66.0 x 35.0 x 17.35 mm backlit LCD mounts by hook-and-loop or cable ties ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07LFJ19J3 | | Best Sellers Rank | 72,864 in Garden ( See Top 100 in Garden ) 11 in Lawn Mower Hour Tachometers | | Brand | NInE-ROnG | | Country Of Origin | China | | Customer Reviews | 4.0 out of 5 stars 171 Reviews | | Item Weight | 48 Grams | | Item weight | 48 Grams | | Manufacturer | Jayron | | Manufacturer Part Number | JR-HM032A | | Material | Acrylonitrile Butadiene Styrene (ABS) | | Model Number | JR-HM032A | ## Product Details - **Brand:** NInE-ROnG - **Item weight:** 80 Grams - **Manufacturer:** Jayron - **Material:** Acrylonitrile Butadiene Styrene (ABS) ## Images ![Jayron Hour Meter Tachometer for Petrol Mower and Generator - Image 1](https://m.media-amazon.com/images/I/41tJRxU7JkL.jpg) ![Jayron Hour Meter Tachometer for Petrol Mower and Generator - Image 2](https://m.media-amazon.com/images/I/3120886-IXL.jpg) ![Jayron Hour Meter Tachometer for Petrol Mower and Generator - Image 3](https://m.media-amazon.com/images/I/41Q9milt0xL.jpg) ![Jayron Hour Meter Tachometer for Petrol Mower and Generator - Image 4](https://m.media-amazon.com/images/I/41NhsTOCaDL.jpg) ![Jayron Hour Meter Tachometer for Petrol Mower and Generator - Image 5](https://m.media-amazon.com/images/I/410scFHTR-L.jpg) ## Available Options This product comes in different **Item Package Quantity** options. ## Questions & Answers **Q: will this work on a diesel engine as there is no coil, can i use the tacho pick up in the alternator?** A: I don’t know but I doubt it as it works off the spark plug leads **Q: Will this work on yamaha f20gel outboard motor and is it possible to extend the cable?** A: Should work fine. I don't know if you can extend the cable though. Not sure how tolerant the display end of the unit will be to water. **Q: four stroke, single cylinder (400cc) would it work???** A: Yes it should do, you need the correct setting thats all **Q: How can i turn on the backlit light** A: This meter has an adjustable backlight: ON/OFF/AUTO, Default Backlit mode: AUTO (L-AUT). To Set the Backlit: On “TOT” total hours mode, Press “MENU” button 7 Times until display shows “L-AUT” (showed as chart below), Hold the “MENU” button until “L-AUT” icon starts flashing, release and Press either “MENU”or “SET” button until you get your desired backlit mode. After 10 seconds with no operation done, the display will return to total hours, you are done. L-AUT+ LIGHT “AUTO” mode . L - ON = “ON” mode . - off “= OFF” mode . ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great bit of kit *by C***H on 10 September 2022* Great bit of kit fitted in seconds and gave a really stable readout. Excellent value for money. ### ⭐⭐⭐⭐ Used on my paramotor *by A***E on 7 January 2025* Bought for my paramotor to keep track of engine time used so I can service it and taco the use. Really easy to attach and works really well ### ⭐ Terrible Product - Avoid *by P***G on 30 July 2025* This is a terrible item. Fresh out the box it does not work. Display doesn't turn on. Really badly written instructions and no support online. Avoid this product if you want a rev counter that works. ## Frequently Bought Together - Jayron JR-HM032A Self Powered Digital Tachometer/Inductive/Maintenance/Waterproof/Backlit/Shutdown Hour Meter,Battery Replaceable,for Lawn Mower Tractor Generators and Pneumatic Equipment - Sealey Vs526 in-Line Ignition Spark Tester --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hk/products/98627349-jayron-hour-meter-tachometer-for-petrol-mower-and-generator](https://www.desertcart.hk/products/98627349-jayron-hour-meter-tachometer-for-petrol-mower-and-generator) --- *Product available on Desertcart Hong Kong* *Store origin: HK* *Last updated: 2026-07-29*