1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your Zerone SH-748 Quartz Hour Meter. This device is designed for accurate time tracking on various equipment, including engineering vehicles, cars, trucks, marine vessels, and ATVs. Please read this manual thoroughly before installation and use to ensure proper function and longevity of the product.
2. Consignes de sécurité
- Always disconnect power before installing or servicing the hour meter to prevent electrical shock.
- Assurer l'alimentation voltage matches the meter's specified voltage range (12V-36V AC/DC). Incorrect voltagCela peut endommager l'appareil.
- Do not attempt to open or modify the hour meter. There are no user-serviceable parts inside.
- Keep the device away from excessive moisture or extreme temperatures outside its operating range.
- Assurez-vous que tous les branchements électriques sont bien fixés et correctement isolés afin d'éviter les courts-circuits.
3. Produit terminéview
The Zerone SH-748 is a compact, round quartz hour meter featuring a 6-digit mechanical display. It is designed for durability and accurate timekeeping in demanding environments.

Figure 3.1 : Devant view of the Zerone SH-748 Quartz Hour Meter, showing the 6-digit scrolling digital display.

Figure 3.2 : Détaillé view highlighting the wiring hole and the screw-fixed installation mechanism on the hour meter.

Figure 3.3 : The hour meter shown with its front and back, alongside the included connection terminals for wiring.
Composants:
- Afficher: 6-digit mechanical counter for hours (00000.0 to 99999.9).
- Logement: Durable, fully sealed casing for protection against environmental factors.
- Support de montage: Metal bracket with screws for secure panel installation.
- Bornes de connexion : Included for electrical wiring.
4. Configuration et installation
Follow these steps to properly install your Zerone SH-748 Quartz Hour Meter.
4.1. Choix d'un emplacement d'installation
Select a flat, stable surface on your equipment's dashboard or panel. Ensure the location is easily visible for reading and protected from direct impact or extreme vibrations. The meter is suitable for various applications, including:

Figure 4.1 : Examples of equipment where the hour meter can be used, such as motorboats, motorcycles, snowmobiles, and lawn mowers.

Figure 4.2 : The hour meter seamlessly integrated into a motorcycle's instrument panel.
4.2. Montage du compteur
- Drill a circular hole of appropriate diameter (refer to specifications for exact size) in the chosen panel location.
- Insert the hour meter into the hole from the front.
- Secure the meter from the rear using the provided metal mounting bracket and screws. Tighten the screws firmly but do not overtighten.

Figure 4.3 : Arrière view of the hour meter, illustrating the mounting bracket and electrical connection terminals.

Figure 4.4 : A different angle of the hour meter's rear, showing the secure attachment of the mounting hardware.
4.3. Instructions de câblage
The hour meter operates on 12V-36V AC/DC. Connect the meter to a power source that is active when the equipment is in operation.
- Identify the positive (+) and negative (-) terminals on your equipment's power source.
- Connect the provided connection terminals to the appropriate wires from your power source.
- Insert the wired terminals into the corresponding slots on the back of the hour meter. Ensure a firm connection.
- Vérifiez le voltage input is within the 12V-36V AC/DC range.

Figure 4.5 : Détaillé view of the wiring connections and the product label indicating AC/DC 12-36V input.
4.4. Guide vidéo d'installation
For a visual guide on the installation process, please refer to the video below. This video demonstrates the connection of the hour meter and its components.
Vidéo 4.1: This video demonstrates the physical components and basic assembly of the AC/DC 12-36V Quartz Hour Meter Gauge Tester, including the meter itself and its connection terminals.
5. Mode d'emploi
The Zerone SH-748 Quartz Hour Meter is designed for straightforward operation.
- Once properly installed and connected to a power source, the meter will automatically begin accumulating hours when power is supplied to it.
- The 6-digit display shows the total accumulated operating hours, with the last digit representing tenths of an hour.
- The meter does not have a reset function, ensuring continuous and tamper-proof tracking of equipment usage.
- The red indicator on the display rotates to confirm the meter is actively counting.
6. Entretien
The Zerone SH-748 Hour Meter requires minimal maintenance due to its robust and sealed design.
- Nettoyage: Essuyez l'écran et le boîtier avec un chiffon doux et sec.amp Utilisez un chiffon. Évitez d'utiliser des nettoyants abrasifs ou des solvants qui pourraient endommager la surface.
- Vérification de la connexion : Periodically inspect the wiring connections to ensure they remain secure and free from corrosion.
- Protection de l'environnement : While the meter is fully sealed and dust-proof, prolonged exposure to extreme conditions beyond its specified operating range should be avoided to maximize lifespan.
7. Dépannage
If you encounter issues with your hour meter, refer to the following common problems and solutions:
| Problème | Cause possible | Solution |
|---|---|---|
| Meter not displaying hours / No power |
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| Inaccurate hour counting |
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| Red indicator not rotating |
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If the problem persists after attempting these solutions, please contact Zerone customer support.
8. Spécifications
| Modèle | SH-748 |
| Plage de comptage | 99999.9 heures |
| Count Accuracy | ±0.01 |
| Réinitialisation de l'appareil | Non |
| Voltage | 12V-36V AC / DC |
| Consommation d'énergie | 0.3 W |
| Température de fonctionnement | -10℃ à 50℃ |
| Humidité relative | Entièrement scellé |
| Sismique Amplatitude | 10-70HZ 1-8g (Heavy strength) |
| Poids de l'article | 123g |
| Matériel | Acier inoxydable |
| Fabricant | Zéro un |
9. Garantie et assistance
Warranty information for the Zerone SH-748 Quartz Hour Meter is not provided within this instruction manual. For details regarding warranty coverage, returns, or technical support, please refer to the product packaging or contact your retailer or the manufacturer directly.
Fabricant: Zéro un





