1. Introduction
This manual provides essential instructions for the safe and effective use of your OMRON Electronic Thermometer Kenon-kun MC-171W. Please read this manual thoroughly before use and keep it for future reference. This device is designed for accurate body temperature measurement in the armpit or oral cavity.
2. Informations de sécurité et avertissements
AVERTISSEMENT:
- Self-diagnosis or treatment based on measurement results is dangerous. Always follow medical guidance.
- This product is not an ear thermometer. Do not measure temperature anywhere other than the armpit or oral cavity.
- Keep out of reach of infants and young children. Avoid use by children alone.
- Product warranty is limited to use within Japan.
- Always read the instruction manual carefully and use the device correctly.
This device is a Controlled Medical Device with Medical Device Certification (Approval) Number: 219AGBZX00040000.
3. Produit terminéview
The OMRON Kenon-kun MC-171W is a compact and waterproof electronic thermometer designed for reliable temperature measurement. It features an easy-to-read display and an automatic shut-off function to conserve battery life.
3.1. Composants
- Thermometer Unit
- Trial Battery (Alkaline manganese button battery LR41 x 1)
- Étui de rangement
- Manuel d'instructions

Image : Avant view of the OMRON MC-171W Electronic Thermometer.

Image: Close-up of the thermometer display showing a temperature reading of 36.8°C.
4. Installation
4.1. Installation de la batterie
The thermometer comes with a trial battery (LR41) pre-installed. If the battery needs replacement, follow these steps:
- Locate the battery compartment cover, usually at the end opposite the measurement tip.
- Retirez délicatement le couvercle.
- Insert a new LR41 alkaline manganese button battery with the correct polarity (+/-).
- Replacez soigneusement le couvercle du compartiment à piles.
Note: Ensure the cover is properly sealed to maintain the device's water resistance.
5. Mode d'emploi
5.1. Utilisation générale
- Press the power button to turn on the thermometer. A short beep will sound, and the last measured temperature will be displayed briefly.
- The display will then show 'L' and a flashing '°C' (or '°F'), indicating it is ready for measurement.
5.2. Armpit Measurement
For accurate armpit temperature measurement, follow these guidelines:
- Ensure the armpit is dry.
- Place the tip of the thermometer in the center of the armpit, inserting it from bottom to top.
- Press the elbow firmly against the side of the body, holding the arm at a 30° to 45° angle to ensure the thermometer is securely in place.
- Hold the thermometer in position for approximately 10 minutes until the buzzer sounds.

Image: Diagram showing that temperature can vary between the center and outer parts of the armpit.

Image: Illustration of correct armpit thermometer placement, with the elbow pressed against the side at a 30-45 degree angle.

Image : Examples of incorrect armpit thermometer positioning, indicating that the thermometer should not move or shift during measurement.
5.3. Mesure orale
For accurate oral temperature measurement:
- Place the tip of the thermometer under the tongue, in one of the heat pockets at the base of the tongue.
- Close your mouth and hold the thermometer in place with your lips and fingers.
- Hold the thermometer in position for approximately 5 minutes until the buzzer sounds.
5.4. Lecture des résultats
Once the measurement is complete and the buzzer sounds, the final temperature reading will be displayed on the screen. The thermometer will automatically turn off after approximately 30 minutes of inactivity.
6. Entretien
6.1. Nettoyage
The OMRON MC-171W is waterproof and can be cleaned by rinsing it under water. For disinfection, wipe the measurement tip with an alcohol swab or a cloth dampened with disinfectant. Do not immerse the entire thermometer in water for extended periods or use harsh chemical cleaners.
6.2. Stockage
Store the thermometer in its protective case when not in use. Keep it in a cool, dry place, away from direct sunlight, high temperatures, and humidity. Avoid dropping or subjecting the device to strong impacts.
7. Dépannage
| Problème | Cause possible | Solution |
|---|---|---|
| Le thermomètre ne s'allume pas. | La batterie est déchargée ou mal insérée. | Replace the battery (LR41) or reinsert it correctly. |
| Lectures inexactes. | Improper placement or insufficient measurement time. | Ensure correct placement in the armpit or oral cavity and allow sufficient measurement time (10 min for armpit, 5 min for oral). |
| L'écran affiche « Err ». | Erreur de mesure ou dysfonctionnement de l'appareil. | Turn off the thermometer, wait a few minutes, and try again. If the error persists, contact customer support. |
8. Spécifications
| Fonctionnalité | Détail |
|---|---|
| Numéro de modèle | MC-171W |
| Medical Device Certification Number | 219AGBZX00040000 |
| Méthode de mesure | Actual Measurement |
| Précision de mesure | ±0.1°C (when measured in water bath at 23°C) |
| Plage de mesure | 32.0 à 42.0°C |
| Temps de mesure | Approx. 10 minutes (armpit), Approx. 5 minutes (oral) |
| Environnement d'exploitation | Ambient temperature +10 to +40°C, Relative humidity 30 to 85% RH |
| Résistance à l'eau | Conforms to JIS T1140 specified drip-proof type |
| Source d'énergie | 1 x LR41 Alkaline manganese button battery |
| Autonomie de la batterie | Approx. 1100 measurements (when used for 10 minutes each) |
| Product Dimensions (W x L x T) | 19.6 mm x 129.7 mm x 13.2 mm |
| Poids | Environ. 13g (hors batterie) |
| Couleur | Blanc |
| Caractéristiques | Auto-off, Buzzer notification, Previous reading memory, Battery replaceable |
| Pays d'origine | Chine |
9. Garantie et assistance
OMRON Healthcare products are manufactured to high-quality standards. For warranty information, please refer to the specific warranty card included with your product. Please note that product warranty is generally limited to use within Japan.
9.1. Assistance clientèle
For product inquiries, separate purchases, consumables, or repair requests, please contact Omron Healthcare Customer Support:
- Website: https://www.healthcare.omron.co.jp/support/
- Omron Service Center:
- Telephone (Toll-Free): 0120-30-6606
- FAX (Toll-Free): 0120-10-1625
- Horaires d'ouverture: Monday - Friday, 9:00 - 19:00 (excluding holidays)
Please note that operating hours may change without prior notice.