--- product_id: 98627349 title: "Jayron JR-HM032A Self Powered Digital Tachometer/Inductive/Maintenance/Waterproof/Backlit/Shutdown Hour Meter,Battery Replaceable,for Lawn Mower Tractor Generators and Pneumatic Equipment" brand: "nine-rong" price: "222 zł" currency: PLN in_stock: true reviews_count: 13 category: "N In E R On G" url: https://www.desertcart.pl/products/98627349-jayron-jr-hm032a-self-powered-digital-tachometer-inductive-maintenance-waterproof store_origin: PL region: Poland --- # Dual-color backlit LCD display 8 programmable firing patterns Maintenance reminder with countdown Jayron JR-HM032A Self Powered Digital Tachometer/Inductive/Maintenance/Waterproof/Backlit/Shutdown Hour Meter,Battery Replaceable,for Lawn Mower Tractor Generators and Pneumatic Equipment **Brand:** nine-rong **Price:** 222 zł **Availability:** ✅ In Stock ## Summary > ⚡ Stay ahead of engine wear with smart tracking and alerts! ## Quick Answers - **What is this?** Jayron JR-HM032A Self Powered Digital Tachometer/Inductive/Maintenance/Waterproof/Backlit/Shutdown Hour Meter,Battery Replaceable,for Lawn Mower Tractor Generators and Pneumatic Equipment by nine-rong - **How much does it cost?** 222 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/98627349-jayron-jr-hm032a-self-powered-digital-tachometer-inductive-maintenance-waterproof) ## 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 - • **Engine Hour Monitoring:** Accurately logs total and job-specific engine hours to optimize usage and maintenance schedules. - • **Precision RPM Tracking:** Real-time RPM display with resettable max and overspeed alerts keeps your engine performance in check. - • **Rugged & Reliable Design:** IP65 waterproof rating, replaceable battery, and data retention after shutdown for long-lasting durability. - • **Smart Maintenance Alerts:** Customizable countdown timer flashes 'SVC' icon to ensure you never miss critical upkeep. - • **Vibrant Dual-Color Backlight:** Red warning and green normal modes enhance visibility day or night, with auto or manual settings. ## Overview The Joyron JR-HM032A is a versatile tachometer and hour meter designed for gas-powered equipment like lawn mowers, generators, and marine engines. It features 8 programmable firing patterns, real-time RPM display with overspeed warnings, and a maintenance reminder system with a countdown timer. The dual-color backlit LCD ensures clear visibility, while its IP65 waterproof rating and replaceable battery guarantee durability and reliability in demanding environments. ## Description Joyron JR-HM032A Tachometer Hour Meter,Maintenance Reminder,Backlit Display,Use for Lawn Mower Generator Marine Outboard Jetski Dirtbike and Gas Powered Equipment : desertcart.co.uk: Business, Industry & Science Review: Easy to fit - Easy to fit and does the job Review: Terrible Product - Avoid - 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. ## Features - MULTI-FUNCTION TACHOMETER-----8 Programmable firing patterns; RPM real time dispalay;Resettable Max RPM; Overspeed warning with settable value;Settable Two gears RPM refresh rate. - HOUR METER----Track the number of hours the engine has worked. When the engine is turned off, the total running time of the engine will be displayed and remain visible. TOT hours cannot be reset,JOB timer for measuring specific working time; resettable. - MAINTENANCE REMINDER----Programmable maintenance interval in countdown mode,When the maintenance interval time is reached 0,the "SVC" icon will flash. - BACKLIGHT----This product has two colors of backlight: red and green. The LCD screen displays red backlight when warning ; the green backlight can be set to be always on,turn off or automatically adjusted. - OTHER----Battery can be replaced; User shutdown，data remains after shutdown; waterproof rating: IP65. Returning to the home screen if there is no operation on other screen for more than 10s automatically. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07LFJ19J3 | | Batteries | 1 Lithium Metal batteries required. (included) | | Batteries Required? | Yes | | Batteries included? | Yes | | Battery Cell Type | Lithium Metal | | Best Sellers Rank | 27,353 in Garden ( See Top 100 in Garden ) 4 in Lawn Mower Hour Tachometers | | Customer Reviews | 4.0 4.0 out of 5 stars (165) | | Date First Available | 17 Dec. 2018 | | Item Package Quantity | 1 | | Item Weight | 80 g | | Manufacturer | Jayron | | Manufacturer reference | JR-HM032A | | Material | Acrylonitrile Butadiene Styrene (ABS) | | Part number | JR-HM032A | ## Product Details - **Brand:** NInE-ROnG - **Item weight:** 80 Grams - **Manufacturer:** Jayron - **Material:** Acrylonitrile Butadiene Styrene (ABS) ## Images ![Jayron JR-HM032A Self Powered Digital Tachometer/Inductive/Maintenance/Waterproof/Backlit/Shutdown Hour Meter,Battery Replaceable,for Lawn Mower Tractor Generators and Pneumatic Equipment - Image 1](https://m.media-amazon.com/images/I/41tJRxU7JkL.jpg) ## 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 ### ⭐⭐⭐⭐⭐ Easy to fit *by A***R on 4 July 2025* Easy to fit and does the job ### ⭐ 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. ### ⭐⭐⭐⭐ 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 ## 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.pl/products/98627349-jayron-jr-hm032a-self-powered-digital-tachometer-inductive-maintenance-waterproof](https://www.desertcart.pl/products/98627349-jayron-jr-hm032a-self-powered-digital-tachometer-inductive-maintenance-waterproof) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-04-23*