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⏲️ Stay ahead of engine wear — never miss a beat or a warning!
The Runleader RL-HM035A is a compact, waterproof digital hour meter and engine monitor designed for gas engines across lawn tractors, generators, marine vehicles, and more. It tracks total and job-specific engine hours up to 999.99, measures RPM up to 25,000 with alert capabilities, and monitors engine temperature from -20°C to 300°C. Featuring programmable maintenance intervals, adaptive backlighting for day/night use, and a durable one-wire spark plug connection, it ensures precise engine health monitoring and timely maintenance reminders to maximize engine longevity.

















| Asin | B092CDSQ33 |
| Best Sellers Rank | #83,989 in Automotive (See Top 100 in Automotive) #31 in Car Electrical Hour Meter |
| Brand Name | Runleader |
| Customer Reviews | 4.0 4.0 out of 5 stars (1,105) 4.0 out of 5 stars |
| Item Dimensions | 37 millimeters |
| Item Weight | 60 Grams |
| Manufacturer | Ningbo Jiangbei Run Leader Electronics Co., Ltd |
| Material Type | Plastic |
| Model | RL-HM035A |
| Part Number | RL-HM035A |
| Thread Style | Spark Plug Wire Wrap (One-wire) |
| Upc | 723093900728 |
User
Works as described
Small for what it is so placement to see it is difficult. Works as it should
User
Funktioniert
Habe das Ding auf einen 3 Zylinder Außenborder funktioniert tadellos
User
blocage du compte tour.
Installé sur une moto custom ancienne sans compte tours ,le compte tours bloque a environ 1700t/mn .J'ai essayé plusieurs étalonnages du compte tours mais c'est compliqué avec une notice sans français Le thermomètre fonctionne bien Point positif pas besoin d'alimentation électrique à prendre sur la moto.
User
Great product
great for monitoring temps & rmp also records operating hours
User
As described
Easy to install, but not working well it's reset everytime
Trustpilot
1 month ago
2 weeks ago