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⚡ Stay ahead of the grind with Jayron’s ultimate engine watchdog!
The Jayron Hour Meter Tachometer is a compact, IP65-rated device designed for petrol mowers and generators. It features a non-resettable total hours counter with 0.1-hour accuracy, a resettable job timer, live RPM monitoring up to 20,000 RPM, max RPM recall, and an RPM alert system. Supporting 8 programmable firing patterns for two- and four-stroke engines, it also includes a service countdown timer that signals maintenance needs. Its backlit LCD and versatile mounting options make it an essential tool for precise engine management and upkeep.








| ASIN | B07LFJ19J3 |
| Best Sellers Rank | 101,444 in Garden ( See Top 100 in Garden ) 26 in Lawn Mower Hour Tachometers |
| Brand | NInE-ROnG |
| Country Of Origin | China |
| Customer Reviews | 4.0 out of 5 stars 173 Reviews |
| Item Highlight | Total hours, resettable job timer, service countdown, RPM and max recall, 8 firing patterns, for mower, outboard, ATV Item Highlight Total hours, resettable job timer, service countdown, RPM and max recall, 8 firing patterns, for mower, outboard, ATV See more |
| Item Weight | 48 Grams |
| Item weight | 48 Grams |
| Manufacturer | Jayron |
| Manufacturer Part Number | JR-HM032A |
| Material | Acrylonitrile Butadiene Styrene (ABS) |
| Model Number | JR-HM032A |
M**N
Reliable and accurate.
Installed on my sidecar outfit. A little fiddly to get the wire secured but it's been on a year and is still there. Plus it's still on the original battery which is great. What else to say? It does the job really well and seems accurate. Sensibly priced and I'm happy so would recommend.
A**E
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
C**H
Great bit of kit
Great bit of kit fitted in seconds and gave a really stable readout. Excellent value for money.
A**.
Don’t bother
Didn’t work on my 2023 Tohatsu 20Hp Rev counter worked but didn’t count any run hours.
H**R
Does what it says on the tin
Works well for monitoring revs from the spark plug lead. I'd recommend wrapping five times for a single cylinder engine close the plug as possible wrapped at least five times to be accurate. Battery has lasted well for the 10 hours use to date for scooter commuting.
A**R
Easy to fit
Easy to fit and does the job
M**Y
Tachometer Hour Meter
This Tachometer Hour Meter is very easy and quick to fit. The instructions are a little hard to understand in places. This is NOT waterproof. It is only a little shower proof. I fitted this to my lawn mower & after 1 hour in the rain it fogged up. I dried it out but the display has now lost some of the digits. I have also found it is about 10 percent out on the hour timer.
P**G
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.
D**L
Resetten is onmogelijk
Resetten is onmogelijk
C**Z
cuentarevoluciones
perfecto
P**L
Bien mais pas de notice
Très bien mais je ne mets pas 5 étoiles car il n’y a pas de notice
H**N
Funktioniert
Funktioniert
J**E
Ok
Tar en hel del batteri men del lyser i alla fall om man vill.
Trustpilot
1 week ago
2 weeks ago