1. Introduction
The Laserliner MultiWet-Finder Plus is a versatile diagnostic tool designed for non-destructive measurement of material moisture and ambient conditions. It provides quick and reliable readings for various building materials, along with air temperature, relative humidity, and dew point temperature. This manual provides essential information for the safe and efficient operation of your device.

Figure 1 : The Laserliner MultiWet-Finder Plus device. This image shows the front view of the device, highlighting its large digital display, control buttons, and the spherical sensor at the top.
2. Consignes de sécurité
Please read these safety instructions carefully before using the device. Failure to follow these instructions may result in electric shock, fire, or injury.
- Keep the device away from moisture and direct sunlight.
- Do not open the device. Repairs should only be performed by authorized personnel.
- Use only specified batteries. Ensure correct polarity during installation.
- Évitez les chocs violents ou de faire tomber l'appareil.
- N’utilisez pas cet appareil dans des atmosphères explosives ou à proximité de matériaux inflammables.
- Mettez au rebut les piles et l'appareil conformément à la réglementation locale.
3. Produit terminéview
3.1 Composants de l'appareil
The MultiWet-Finder Plus features a robust design with intuitive controls and a clear display.
- Capteur sphérique : For non-destructive material moisture measurement.
- Écran LCD : Shows measurement values, modes, and indicators.
- Bouton MODE : To switch between measurement modes (Index, CM%, MASS%).
- Bouton REF : To set a reference value.
- MAX/SET Button: À view maximum/minimum values or confirm settings.
- Bouton RECHERCHER : To activate the measurement.
- Temperature/Humidity Sensors: Located on the side for ambient condition measurements.

Figure 2 : Côté view of the device showing the integrated sensors for air temperature and relative humidity. The image also indicates the measurement ranges for these sensors: air temperature from -10°C to 60°C, relative humidity from 20% to 90% RH, and dew point temperature from -20°C to 60°C.
3.2 Indicateurs d'affichage
The LCD display provides comprehensive information:
- Température (°C) : Ambient air temperature.
- Relative Humidity (% RH): Ambient air humidity.
- Dew Point Temperature (°C): Calculated dew point.
- Moisture Index: A relative value indicating moisture content.
- CM% / MASS%: Specific moisture content for selected materials.
- DRY/WET Bar Graph: Visual indication of moisture level (green for dry, red for wet).

Figure 3 : The device's display showing readings in "INDEX MODE". This view includes air temperature, relative humidity, dew point, and a large numerical index value, along with the DRY/WET bar graph.

Figure 4 : The device's display showing readings in "CM%" or "MASS%" mode. This view provides specific moisture content percentages, alongside the ambient condition readings.
4. Installation
4.1 Installation de la batterie
The MultiWet-Finder Plus requires standard AAA batteries for operation.
- Repérez le couvercle du compartiment à piles à l'arrière de l'appareil.
- Open the cover by sliding or unscrewing it (refer to the diagram if available).
- Insérez le nombre requis de piles AAA, en veillant à respecter la polarité (+/-).
- Fermez soigneusement le couvercle du compartiment à piles.

Figure 5 : The MultiWet-Finder Plus shown alongside its packaging, which indicates the use of AAA batteries. This image implies the battery type required for the device.
5. Mode d'emploi
5.1 Mise sous/hors tension
Appuyez et maintenez enfoncé le MODE bouton pour allumer ou éteindre l'appareil.
5.2 Sélection du mode de mesure
Appuyez brièvement sur la touche MODE bouton permettant de parcourir les modes de mesure disponibles :
- INDEX Mode: Provides a relative moisture index, useful for quick comparisons and identifying moisture patterns.
- CM% / MASS% Mode: Displays specific moisture content as a percentage for selected material types. Refer to the device's internal material tables for accurate readings.
5.3 Taking a Material Moisture Measurement
- Select the desired measurement mode using the MODE bouton.
- Place the spherical sensor directly onto the surface of the material to be measured. Ensure full contact.
- Appuyez sur le TROUVER bouton pour lancer la mesure.
- Read the moisture value on the display. The device measures moisture up to a depth of approximately 40 mm.

Figure 6 : Illustration demonstrating the non-destructive measurement capability of the MultiWet-Finder Plus. The image shows the spherical sensor penetrating a material surface, indicating a measurement depth of up to 40 mm.

Figure 7 : Close-up of the device's display, highlighting the DRY/WET bar graph and the control buttons. The bar graph visually represents the moisture level, transitioning from green (dry) to red (wet).
5.4 Ambient Condition Measurement
The device continuously measures air temperature, relative humidity, and calculates the dew point temperature. These values are displayed on the upper part of the LCD screen.
5.5 Fonction de référence (REF)
Le RÉF button allows you to set a reference value. This is useful for comparing current measurements against a known dry or acceptable moisture level in a specific material.
- Take a measurement on a known dry area of the material.
- Appuyez et maintenez enfoncé le RÉF button to set this value as the reference.
- Subsequent measurements will show the deviation from this reference.
5.6 Max/Min Function (MAX SET)
Appuyez sur le MAX/SET bouton pour view the maximum or minimum measured values during a session. This helps in identifying the highest or lowest moisture points.
5.7 Digital Connection (App)
The MultiWet-Finder Plus supports digital connection to a smartphone application for data logging and analysis. Refer to the app's instructions for pairing and usage.

Figure 8 : The MultiWet-Finder Plus wirelessly connected to a smartphone displaying the "DIGITAL CONNECTION" feature. This image illustrates the device's capability to transmit data to a mobile application for further analysis and recording.

Figure 9 : The MultiWet-Finder Plus being used in a bathroom setting, indicating its application in detecting moisture in damp environments. The image shows the device pointed towards a wall, with a water droplet icon suggesting moisture detection.
6. Entretien
- Nettoyage: Essuyez l'appareil avec un chiffon doux, damp chiffon. N'utilisez pas de nettoyants abrasifs ou de solvants.
- Stockage: Store the device in a dry, cool place, away from direct sunlight. Remove batteries if storing for extended periods to prevent leakage.
- Étalonnage: The device is factory calibrated. If you suspect inaccuracies, contact Laserliner support for recalibration services.
7. Dépannage
| Problème | Cause possible | Solution |
|---|---|---|
| L'appareil ne s'allume pas. | Piles déchargées ou mal insérées. | Remplacez les piles par des neuves en respectant la polarité. |
| Mesures d'humidité inexactes. | Poor contact with material, incorrect mode selected, or material outside measurement range. | Ensure full contact with the spherical sensor. Select the appropriate material mode. Consult specifications for measurement range. |
| L'écran est noir ou clignote. | Low battery power or internal error. | Remplacez les piles. Si le problème persiste, contactez le service client. |
8. Spécifications
| Fonctionnalité | Détail |
|---|---|
| Numéro de modèle | 082.091A |
| Dimensions du produit | 5.51 x 5.51 x 8.66 pouces |
| Poids | 1.32 livres |
| Fabricant | Laserliner |
| Matériel | Stainless Steel (sensor ball, device body is likely plastic) |
| Profondeur de mesure | Approx. 40 mm (non-destructive) |
| Plage de température de l'air | -10°C à 60°C |
| Plage d'humidité relative | 20% à 90% HR |
| Plage de température du point de rosée | -20°C à 60°C |
9. Garantie et assistance
For warranty information, technical support, or service inquiries, please contact Laserliner customer service or visit their official webConsultez le site. Conservez votre reçu d'achat comme preuve d'achat.
Fabricant: Laserliner
Website: www.laserliner.com (Example lien (le lien réel peut varier)





