This RL-HM008 waterproof digital hour meter features a wide AC/DC voltage range and ultra-low 0.003W power consumption. Ideal for generators, excavators, and agricultural machinery, RL-HM008 provides high-precision time tracking for essential equipment maintenance. Durable and reliable, this industrial timer supports OEM/ODM customization, making it a top choice for global cross-border export and professional industrial applications.
Specification
| Model |
T-RL-HM008 |
| Timing Range |
0-999999H |
| Timing Accuracy |
0.1H/1H |
| External Power Supply |
AC 86-230V, DC 4.5-60V (Optional) |
| Operating Temperature |
-20℃~+65℃ |
| Product Dimension |
53*32*17mm |
| Display Dimension |
25.5*8.2mm |
| Display Type |
LCD |
| LCD Temperature Range |
-40℃~+85℃ |
| Waterproof Rating |
IP68 |
| Housing Material |
ABS |
| Installation Method |
Screw/Bracket Mounting |
| Weight |
55g |
Features
- High-Precision Timing: This digital hour meter accurately tracks the total running hours of your equipment from 0 to 999,999H with a resolution of 0.1H/1H. The flashing hourglass icon provides a real-time visual indicator of active timing.
- Non-Resettable Total Hours: To ensure the integrity of maintenance logs and prevent data tampering, the total accumulated time on this digital hour meter is non-resettable, reflecting the true lifespan of the machine.
- Reliable Data Storage: Equipped with an automatic power-off memory function, all data is securely stored for over 25 years. This ensures your records remain intact even during long periods of inactivity without requiring a battery.
- Voltage-Activated Trigger: The digital hour meter starts timing immediately upon detecting an external voltage signal and stops when power is disconnected, ensuring perfect synchronization with the engine or machine operation.
- Universal Voltage Compatibility: Designed for maximum versatility, it supports a wide voltage range of AC/DC 4.5-60V and AC 86-230V, making it the perfect digital hour meter for generators, excavators, and various industrial machinery.
Advantages
- Superior Waterproof Performance: Engineered with an IP67 waterproof rating, this RL-HM008 is built to withstand harsh environments and heavy-duty applications. It remains fully functional and reliable even when exposed to moisture, dust, and high-pressure washing.
- Non-Polarity Terminals: For a hassle-free installation, the pins are designed with non-polarity, allowing you to connect the positive and negative wires to either terminal. This user-friendly design prevents circuit damage and simplifies the wiring process.
- Secure Mounting System: Equipped with both screw and bracket mounting options, this digital hour meter ensures a firm and stable fit. The robust installation prevents the unit from loosening or falling off, even when subjected to intense vibration from engines or industrial machinery.
Dimension

Installation Drawing

Applications
This digital hour meter is highly versatile and widely used across various industries:
- Garden & Agricultural Machinery: Lawn mowers, wood chippers, rice transplanters, and weeders.
- Construction & Road Equipment: Excavators, bulldozers, road rollers, tamping machines, and cutters.
- Vehicles & Marine: Motorcycles, golf carts, ATVs, outboard motors, and yachts.
- General Industrial Equipment: Generators, air compressors, dehumidifiers, air purifiers, and UV lamps.

FAQ
Q1: How does the digital hour meter track time?
A1: The device is triggered by an external voltage signal. Once it detects the appropriate AC or DC voltage, the hourglass icon flashes, indicating that the digital hour meter is actively accumulating run time.
Q2: Can the digital hour meter handle outdoor or wet conditions?
A2: Yes, the unit is rated IP67 waterproof. It is fully sealed to protect against dust and can withstand immersion in water (up to 1 meter for 30 minutes), making it ideal for pressure washing and heavy rain.
Q3: How is the unit mounted?
A3: The digital hour meter is designed for secure panel mounting using a bracket and screws (included). This prevents the device from vibrating loose during heavy engine operation.