1. Introduzione
The CONTEC CMS50D2 Pulse Oximeter is a non-invasive device designed for measuring the oxygen saturation of arterial hemoglobin (SpO2) and the pulse rate. This device is intended for spot-checking and continuous monitoring of adult and pediatric patients in home and clinical environments. It provides a quick and accurate assessment of respiratory function.
The concentration of oxygen determines the percentage of hemoglobin in arterial blood that is saturated with oxygen, making it an important parameter for evaluating respiratory function. The device is small, lightweight, and portable, making it convenient for use anywhere.
2. Informazioni sulla sicurezza
Please read all safety warnings and instructions carefully before using this device. Improper use may result in inaccurate readings or device damage.
- Non utilizzare il pulsossimetro in un ambiente di risonanza magnetica o TC.
- Do not use the device in environments with flammable anesthetics.
- The device is not intended for continuous monitoring of patients requiring constant supervision.
- Tenere il dispositivo lontano da acqua e umidità.
- Consult a medical professional for interpretation of readings and before making any medical decisions.
3. Caratteristiche del prodotto
- Determines arterial oxygen saturation (SpO2) and pulse rate (PRbpm).
- Displays SpO2 value and pulse rate value.
- Basso volumetage indicator and audible alarm if pulse is above set limit.
- Suitable for individuals with heart failure, chronic obstructive pulmonary diseases, bronchial asthma, and for high-altitude sports (mountaineering, skiing, aviation).
- Adjustable display mode and screen brightness.
- OLED display in blue and yellow with pulse waveform graph.
- Automatic power-off: The device will turn off automatically in 5 seconds if the finger is improperly placed or removed.
4. Contenuto della confezione
La confezione del prodotto in genere include i seguenti articoli:
- 1 x CONTEC CMS50D2 Pulse Oximeter
- 1 x cordino
- 2 batterie AAA
- 1 x Manuale utente
5. Impostazione
5.1. Installazione della batteria
The CMS50D2 Pulse Oximeter requires two AAA batteries for operation. Ensure correct polarity when inserting the batteries.
- Aprire il coperchio del vano batteria situato sul retro del dispositivo.
- Inserire due batterie AAA rispettando la polarità indicata (+ e -) all'interno del vano.
- Chiudere saldamente il coperchio del vano batterie.

Figura 1: Fronte view of the Andon CMS50D2 Pulse Oximeter, showing the OLED display and finger insertion area.
6. Istruzioni per l'uso
Follow these steps to obtain accurate readings:
- Assicurarsi che le batterie siano installate correttamente.
- Aprire il clamp dell'ossimetro.
- Insert one of your fingers (preferably the index, middle, or ring finger) into the rubber opening of the oximeter, ensuring the nail surface is facing upwards towards the display.
- Rilasciare il clamp, allowing the oximeter to securely hold your finger.
- Premere il pulsante di accensione sulla parte superiore del dispositivo per accenderlo.
- Keep your hand still during the measurement. Do not shake your finger.
- I valori di SpO2 e frequenza cardiaca appariranno sul display entro pochi secondi.
- To change the display orientation or brightness, briefly press the power button while the device is on.
- The device will automatically power off after 5 seconds of inactivity or if the finger is removed.

Figure 2: The pulse oximeter correctly placed on a finger, displaying SpO2 and pulse rate readings.
7. Visualizza informazioni
The OLED display provides the following information:
- SpO2: Peripheral Oxygen Saturation (percentage). This indicates the percentage of hemoglobin in your blood that is saturated with oxygen. Normal values typically range from 95% to 100%.
- PRbpm: Pulse Rate (beats per minute). This is the number of times your heart beats per minute. Normal adult resting heart rate ranges from 60 to 100 bpm.
- Grafico a barre degli impulsi: A vertical bar graph indicating the strength of the pulse.
- Plethysmograph (Waveform): A graphical representation of the pulse, showing blood flow through the finger.
- Indicatore della batteria: Mostra la durata residua della batteria.
8. Manutenzione e cura
8.1. Pulizia
Clean the surface of the oximeter before and after each use. Use a soft cloth dampened with medical alcohol (70% ethanol or isopropanol) to wipe the surface. Do not immerse the device in liquid.
8.2. Conservazione
Conservare il dispositivo in un luogo fresco e asciutto, lontano dalla luce solare diretta e da temperature estreme. Se il dispositivo non viene utilizzato per un periodo prolungato, rimuovere le batterie per evitare perdite.
9. Risoluzione Dei Problemi
| Problema | Possibile causa | Soluzione |
|---|---|---|
| Nessuna visualizzazione dopo l'accensione | Le batterie sono scariche o installate in modo errato. | Sostituire le batterie o reinstallarle correttamente, rispettando la polarità. |
| Letture imprecise | Finger not inserted properly; patient movement; strong ambient light; nail polish or artificial nails. | Re-insert finger correctly; remain still; shield from strong light; remove nail polish/artificial nails. |
| "Finger Out" or "Error" message | Finger not detected or poor signal quality. | Ensure finger is fully inserted and still. Try a different finger. |
| Il display è scuro | Low battery or brightness setting. | Replace batteries. Adjust brightness by pressing the power button. |
10. Specifiche
- Nome modello: CMS50D2
- Produttore: Andon (CONTEC)
- Dimensioni: Dimensioni: 7.62 x 2.54 x 5.08 cm
- Peso: 25 grammi
- Fonte di energia: Batterie 2 x AAA (incluse)
- Durata della batteria: Approximately 50 hours of continuous operation
- Intervallo di misurazione (SpO2): 70-100%
- Tipo di visualizzazione: OLED, blue and yellow
- Spegnimento automatico: Sì, dopo 5 secondi di inattività
- Paese di origine: Svizzera
11. Garanzia e supporto
Specific warranty details for the CONTEC CMS50D2 Pulse Oximeter may vary depending on the region and retailer. Please refer to the warranty card included with your product or contact your point of purchase for detailed warranty information.
For technical support or inquiries, please contact the manufacturer, CONTEC, or the authorized seller from whom you purchased the device. Keep your purchase receipt as proof of purchase.