Industrial digital hour meter provides accurate equipment runtime measurement with 0.1-hour resolution and supports up to 99999.9 hours of operation tracking. Featuring DC 12–36V operating voltage and vibration resistance of 10–70Hz, 1–8g, it delivers reliable performance in harsh environments. The reset function offers convenient use for machinery, vehicles, and industrial equipment. Buy this reliable hour meter for efficient maintenance management
Specification
| Model |
ATO-SYS-1D |
| Timing Range |
0 ~ 99999.9 Hours |
| Timing Resolution |
0.1 Hour |
| Reset Function |
Equipped with reset button |
| Operating Voltage |
DC 12 V ~ 36 V |
| Operating Temperature |
-10 ℃ ~ +50 ℃ |
| Vibration Resistance |
10–70 Hz, 1–8 g (Heavy-duty grade) |
Features
- High-Precision Time Tracking: This hour meter accurately records accumulated operating hours to provide reliable data for equipment usage monitoring, maintenance scheduling, and service management.
- Fully Enclosed Housing Design: The digital hour meter features a fully enclosed structure that protects internal components from dust, moisture, and environmental interference, ensuring stable performance and long service life in harsh operating conditions.
- Stable Performance & Long Service Life: Designed with reliable components and a durable structure, this LCD hour meter maintains consistent operation for long-term working time tracking while reducing replacement frequency and maintenance costs.
- Compact Design & Easy Installation: The hour meter gauge features a compact and lightweight design for convenient installation and simple operation in different types of mechanical equipment.
- Wide Application Range: This equipment hour meter is widely used for engineering vehicles, agricultural machinery, generators, excavators, cranes, and various vehicles to monitor actual working hours and support preventive maintenance.
Dimension (unit: mm)

Wiring Instructions
This hour meter is fitted with 3 terminal pins and one binding post, including Positive (+), Negative (-), Pin C and Pin R.
- Supply DC power to the meter via the Positive (+) and Negative (-) terminals. Timing will start once the Positive (+) terminal is shorted to Pin C.
- To clear accumulated timing data, briefly connect the Positive (+) terminal to Pin R for one instant, the reading will reset immediately.
- The hour meter features data memory retention: recorded values are permanently stored when no reset operation is triggered.
Applications
ATO digital DC hour meter is ideal for engineering vehicles, agricultural machinery, generators, excavators, cranes, and various vehicles. It provides precise and reliable runtime data to support equipment maintenance, management and operational cost analysis.

Tips: What factors affect the accuracy of the hour meter’s time tracking?
The accuracy of the hour meter's time tracking can be affected by several factors. Voltage fluctuations outside the specified range can lead to incorrect readings, while the type of signal (AC or DC) also influences accuracy, as AC signals may be more prone to noise interference. Additionally, improper installation, such as loose connections or poor grounding, can disrupt time tracking. Environmental factors like extreme temperatures, humidity, and exposure to dust or water can also impact performance unless the hour meter is properly rated for these conditions. Finally, ensuring reliable power supply and using meters with long-term memory storage is crucial for preserving data during power outages and maintaining accurate operation hours.