Resettable hour meter for lawn mowers and motorcycles. IP68 waterproof, with accurate timing, automatic runtime storage and maintenance reminders, this hour meter helps you manage service intervals and extend engine life. It mounts easily with double-sided adhesive, ideal for lawn mowers, motorcycles, generators and other gasoline engine equipment. Choose this durable resettable hour meter for convenient and reliable engine maintenance.
Specification
| Model |
ATO-RL-HM016H |
| Timing Range |
0-99999H |
| Timing Accuracy |
0.1H/1H |
| Display Type |
LCD |
| Display Size |
26*13mm |
| Maintenance Reminder |
5H, 10H, 20H |
| Product Dimensions |
68*33*14mm |
| Battery Type |
CR2050 |
| Sensor Cable Length |
1.1M |
| Housing Material |
ABS |
| Waterproof Rating |
IP68 |
| Installation Method |
Surface Mount |
| Package Dimensions |
190*113*25mm |
| Packaging Type |
Blister Packaging |
| Product Weight |
70g |
Features
- Precision Runtime Recording: This hour meter provides precise runtime tracking with automatic data storage. Data remains intact for over 20 years, providing reliable long-term reference.
- Extended Battery Life: Built-in CR2050 button battery with low-power design delivers stable power for approximately 5 years. This resettable hour meter achieves ultra-long standby without frequent battery replacement.
- Smart Maintenance: Equipped with 5H/10H/20H maintenance reminders, the hour meter supports timely servicing and extends equipment service life.
- High-Level Protection: Fully potted internal sealing achieves IP68 waterproofing and dust resistance. This industrial hour meter can withstand heavy rain, high-pressure washing, oil contamination, and severe vibration.
- Inductive Sensing Design: Wrap the sensor wire around the spark plug 5 times, and the hour meter will start timing automatically upon continuous ignition signal detection.
- Flexible Mounting: Dual-sided adhesive mounting allows the hour meter to be securely installed anywhere near the engine, offering flexible placement without occupying additional space.
Timing Functions
- Total Hours: Records the vehicle's cumulative operating hours. Timing range: 0-99,999H.
- Single Session: Records the operating time of a single work session. Timing range: 0-99,999H. Can be reset to zero.
- Non‑Reset Total Hours: The total hours counter is protected against reset to prevent accidental operation.
Dimension

Maintenance Reminder Function
This hour meter features an intelligent maintenance reminder system, alerting you at 5H, 10H, and 20H intervals to clean the air filter, change the engine oil, and maintain valves.
- 5H Interval: The LCD flashes "CLEAN" to indicate that the air filter should be cleaned.
- 10H Interval: The LCD flashes "OIL" to indicate that the engine oil should be replaced.
- 20H Interval: The LCD flashes "CALCE" to indicate that valve maintenance is require.
Applications
Widely used across multiple industries, this resettable hour meter is suitable for lawn mower and garden equipment, generators, motorcycle and marine applications. It delivers reliable runtime date tracking across everyday and demanding operating conditions.

Tips:What are the advantages of a resettable hour meter?
Resettable hour meter offers more flexible and practical runtime management than traditional non-resettable hour meters. In addition to tracking total operating hours, it allows users to reset partial or maintenance time records for oil changes, equipment servicing, rental tracking, and job-based monitoring without affecting the overall accumulated data. With automatic timing, accurate hour recording, and maintenance reminder functions, a resettable engine hour meter helps improve maintenance efficiency, reduce equipment wear, and extend engine service life. One resettable hour meter can be rotated across multiple machines such as lawn mowers motorcycles and generators to combine operational flexibility with reliable tamper proof data integrity.