The Generator Hour Meter from TOOL is a high-precision AC 110-250V mechanical hour meter for accurate engine runtime tracking. Its IP67 waterproof analog round gauge design ensures stable performance in harsh environments. Built with vibration-resistant and maintenance-free construction, it is widely used as a Vibration Hour Meter for generators, tractors, and small engine equipment to provide reliable operating time monitoring.
Specs
| Model |
T-RL-HM009 |
| Timing Range |
0-99999.9H (Total accumulated time non-resettable) |
| Timing Accuracy |
0.1H (Automatically resets to 0 when exceeding 99999.9H) |
| Waterproof Rating |
IP67 |
| Operating Temperature |
-25℃ ~ 65℃ |
| Operating Voltage |
DC 8-80V, AC 110-250V (Optional) |
| Timing Mode |
Power-on activated timing |
| Dimension |
56*56*54mm |
| Package Dimension |
73*64*60mm |
| Weight |
56g |
Pro Tip: Generator Hour Meter is non-resettable for secure record-keeping.
- Note: Always double-check your voltage (AC 110-250V/DC 8-80V) before wiring to prevent damage.
- Reliability: Once tracking starts, the round electric hour meter stores data permanently.
Features
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[Wide Voltage & Universal Fit] Engineered for AC 110–250V systems, Generator Hour Meter provides accurate runtime tracking for backup generators, industrial motors, and marine equipment. A versatile solution for all high-voltage engine monitoring needs.
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[IP67 Waterproof & Dustproof] Featuring a rugged analog round gauge design, rated IP67 waterproof. This ensures fog-free performance, making it an ideal hour meter for lawn mowers and heavy-duty tractors in muddy conditions.
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[Vibration-Resistant Construction] Built with premium earthquake-resistant materials, the mechanical hour meter is specifically designed as a heavy-duty vibration hour meter. It withstands intense engine and motor vibrations, ensuring the quartz timing core remains precise and durable over years of use.
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[Maintenance-Free Tracking] Provides secure, non-resettable tracking up to 99,999.9 hours. The engine hour meter is ideal for small engine maintenance, helping schedule oil changes and routine servicing, effectively extending equipment lifespan.
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[Stable & Easy Installation] Designed for professional-grade reliability, the unit features clear polarity markings and reinforced mounting accessories. This ensures a secure, vibration-proof fit and error-free wiring for any DIY or industrial setup.
Dimension Drawing (unit: mm)

Mechanical Installation

Electrical Wiring

Applications
- Wide Compatibility: Perfectly suited for Lawn Mower maintenance, garden Tractors, and the Marine Industry (IP67 Waterproof for boats, yachts).
- Multi-Purpose Use: Total Hour Meter is ideal for air compressors, water pumps, and industrial motors. It provides high-precision engine tracking to streamline routine servicing and monitor operational hours with maintenance-free efficiency.

FAQs
Q: Can I reset this Generator Hour Meter to zero?
A: No, it is a Non-Resettable Generator Hour Meter. It is designed to provide a permanent, tamper-proof record for Engine Maintenance, ensuring your tracking data is always secure and accurate.
Q: Is the Analog Round Gauge waterproof enough for outdoor use?
A: Yes. The Analog Round Gauge features an IP67 Waterproof rating. Its fully sealed housing is built to withstand heavy rain and dust, making it perfect for Generators, Boats, Tractors, and Lawn Mowers.
Q: How do I choose the correct voltage?
A: It depends on your power source. The Generator Hour Meter is designed for AC 110–250V systems (ideal for backup generators and pumps). Please verify your machine's voltage before ordering to ensure compatibility.
Q: Does the Generator Hour Meter require a battery to save data?
A: No battery needed. The AC 110–250V Hour Meter uses a precise Mechanical Core and power-off storage, so recorded hours are automatically locked and saved even after years of storage—providing a truly Maintenance-Free solution.