1. Introducció
The CONTEC CMS50D2 Digital Finger Pulse Oximeter is designed for non-invasive spot-check measurement of functional oxygen saturation of arterial hemoglobin (SpO2), pulse rate (PR), and Perfusion Index (PI). This device is suitable for use at home, in clinics, and hospitals. It features a clear display with adjustable brightness, pulse waveform, and automatic power-saving standby.
Característiques principals:
- Accurate SpO₂ Monitoring: Real-time blood oxygen saturation (SpO₂) display helps track oxygen levels quickly and reliably.
- Pulse Rate with Waveform & Bar Graph: Displays pulse rate (PR) along with a visual bar graph and pulse waveform.
- Perfusion Index (PI) Display (Optional): Provides insight into blood circulation and signal strength.
- Smart Battery Indicators: Low-battery alert and battery power level display.
- Auto Power-Saving Standby: Automatically switches to standby mode when not in use.
- Multiple Display Modes & Adjustable Brightness: User-friendly screen with adjustable brightness for clear visibility.
2. Informació de seguretat
- Consult a medical professional for interpretation of readings. This device is not intended for continuous monitoring or self-diagnosis.
- No utilitzeu l'oxímetre en un entorn de ressonància magnètica o TC.
- Mantenir fora de l'abast dels nens.
- Do not use on infants or individuals with very small fingers.
- Avoid using the device on the same arm as a blood pressure cuff or arterial catheter.
- No submergiu el dispositiu en aigua o altres líquids.
- Eliminar les bateries segons la normativa local.
3. Components del producte
The CONTEC CMS50D2 Digital Finger Pulse Oximeter package includes:
- One (1) CONTEC CMS50D2 Oximeter
- Un (1) manual d'usuari

Figure 1: Detailed diagram of the CONTEC CMS50D2 Pulse Oximeter. This image labels key components and display elements including the Oxygen Saturation Level, Pulse Rate, Pulse Rate Bar Graph, Battery Indicator, One-Button Operation button, Plethysmograph, and Battery Cover.
4. Configuració
4.1 Instal·lació de la bateria
- Localitza la tapa de la bateria a la part posterior del dispositiu.
- Feu lliscar la tapa de la bateria oberta.
- Insert two (2) AAA batteries into the battery compartment, ensuring correct polarity (+ and -).
- Close the battery cover by sliding it back into place until it clicks.
Nota: Les piles no estan incloses amb el dispositiu.
5. Instruccions de funcionament
5.1 Encès
- Press the power button located on the top of the device.
5.2 Finger Placement
- Obriu el clamp of the oximeter.
- Insert one finger (preferably the index finger) into the rubber opening of the oximeter, ensuring the fingernail is facing upwards towards the display.
- Allibera el clamp.
- Keep your hand still during measurement.

Figure 2: The CONTEC CMS50D2 Digital Finger Pulse Oximeter in use, showing a finger inserted and the clear LCD display presenting SpO2 (blood oxygen saturation), PR (pulse rate), and a real-time pulse waveform.
5.3 Lectura de la pantalla
- The device will automatically begin measurement.
- The display will show your SpO2 percentage, Pulse Rate (PR) in beats per minute (bpm), and a pulse waveform. If enabled, the Perfusion Index (PI) will also be displayed.

Figure 3: This image highlights the device's capability for clinically accurate vital monitoring, showing the oximeter display alongside icons representing Pulse Rate, SpO2 Range, and Perfusion Index (PI), indicating its comprehensive measurement features.
5.4 Ajustar la configuració
- While the device is on, short press the power button to cycle through display modes or adjust brightness. Refer to the full user manual for detailed instructions on specific setting adjustments.
5.5 Apagat
- The device will automatically power off after approximately 8 seconds of inactivity (auto standby feature).
- Alternatively, remove your finger and the device will power off automatically.
6. Manteniment i emmagatzematge
6.1 Neteja
- Netegeu la superfície de l'oxímetre amb un drap suauampamb un 70% d’alcohol isopropílic.
- Do not spray cleaning solutions directly onto the device.
- Ensure the device is completely dry before use.
6.2 Substitució de la bateria
- When the low-battery indicator appears on the display, replace the batteries promptly. Follow the battery installation steps in Section 4.1.
6.3 Emmagatzematge
- Guardeu l'oxímetre en un lloc fresc i sec, allunyat de la llum solar directa i de temperatures extremes.
- Si no heu d'utilitzar el dispositiu durant un període prolongat, traieu-ne les piles per evitar fuites.
7. Solució De Problemes
- No Reading or Inaccurate Reading:
- Ensure the finger is fully inserted into the oximeter.
- Check that the fingernail is facing upwards.
- Keep the hand still during measurement.
- Verifiqueu els nivells de la bateria i substituïu-la si cal.
- Avoid strong ambient light.
- Ensure the finger is not too cold or has nail polish.
- Display is Dim:
- Adjust the brightness setting.
- Comproveu els nivells de la bateria i substituïu-la si és baixa.
- El dispositiu no s'encén:
- Comproveu la instal·lació i la polaritat de la bateria.
- Substituïu les piles per unes de noves.
8. Especificacions

Figure 4: This image presents a table detailing key technical specifications of the CONTEC Pulse Oximeter, including SpO2 measurement range (0% - 100%) with ±2% accuracy, Pulse Rate Range (30 - 250 Bpm) with ±2 Bpm / ±2% accuracy, and PI Measurement Range (0% - 20%) with ±1% or ±0.2% accuracy.
Especificacions generals:
| Paràmetre | Especificació |
|---|---|
| Marca | CONTEC |
| Número de model | CMS50D2 |
| Dimensions del producte (L x A x A) | 6L x 4W x 4H centímetres |
| Pes de l'article | 50 grams |
| Piles incloses | No |
| Nombre d'articles | 1 |
| Components inclosos | Oximeter, User Manual |
| Fabricant | Contec |
| País d'origen | Xina |
9. Garantia i Suport
Fabricant: Contec Medical Systems Co., Ltd.
Importador (Índia): Contec Medical Systems India Private Limited, No B14, Guindy Industrial Estate, Guindy, Chennai- 600032
For detailed warranty information and technical support, please refer to the warranty card included with your product or contact the manufacturer/importer directly using the provided contact information.