CONTEC CMS50D+ Fingertip Pulse Oximeter
A small fingertip device that measures blood oxygen saturation and pulse rate, shows the pulse waveform and alarms when a reading crosses the limits you set. It stores readings for upload to a computer and runs on 2 × AAA batteries. The physician decides the right level for each patient.
2-year warranty
On CONTEC devices, from the date of purchase.
Lifetime service
Service and genuine spare parts, after the warranty too.
Accredited maintenance centre
By the General Authority for Industrial Control.
Direct CONTEC agent
In the medical equipment trade since 1987, with 4 branches.
This device may suit you if...
The reading helps you follow up; the physician interprets it. These are the uses the device is made for.
You follow a patient at home
A quick SpO2 and pulse reading, with an alarm if it leaves the limits.
A clinic or pharmacy
Small and light, and it switches off when the finger is removed.
You need a log of readings
It stores readings and sends them to a computer, including in real time.
In one line: the sensor shines light through the finger and measures what gets through; from the difference it calculates oxygen saturation and pulse.
See the device on video
The manufacturer's device video · CMS50D+CMS50D+ features
Accurate SpO2 and pulse
SpO2 0–100% with ±2% accuracy from 70 to 100%; pulse 30–250 bpm.
Reads under weak perfusion
Readings stay correct at low pulse filling in the finger.
Several display modes
Digits, pulse bar and pulse waveform; the display mode can be changed.
Alarms with adjustable limits
For over-limit readings, low battery, and a pulse beep.
Memory and PC upload
Stores readings for upload and sends live data.
Auto power-off
Within 5 seconds of removing the finger; 58.5 × 31 × 32 mm.
Technical specifications
Safety
- Electrical safety class
- Type BF applied part
Monitoring
- SpO2 measurement
- 0–100%; accuracy ±2% from 70 to 100%
- Pulse-rate measurement
- 30–250 bpm; accuracy ±2 bpm or ±2%
Display
- Display
- Shows SpO2, pulse rate, bar graph and pulse waveform; display mode can be changed
Data & connectivity
- Data storage
- Stores SpO2 and PR readings for upload to a computer; real-time transfer to a computer
Alarms
- Alarms
- Over-limit alarm with adjustable limits, low-battery alarm, pulse sound
Power
- Power input
- 2 × AAA batteries
Physical
- Dimensions
- 58.5 × 31 × 32 mm
Warranty & after-sales
- Ali Ben Ali warranty
- 2 years
Frequently asked questions
About the CMS50D+
What oxygen level is normal?
The physician decides the right level for each patient. The device measures and displays, with alarm limits you set as the physician advises.
Is the reading affected by light or movement?
It is built to resist room light; the difference between readings in light and darkness is under ±1%. It is best to measure with the hand still.
What does it run on?
2 × AAA batteries, with a low-battery warning.
Can I save readings?
Yes, it stores SpO2 and pulse readings for upload to a computer.
Who is it for?
Homes, clinics, health centres and fitness clubs, for fingertip SpO2 and pulse measurement.
About buying medical devices from Ali Ben Ali
Is the device genuine, and how can I be sure?
We are a direct agent of the manufacturer; the device comes straight from the factory with the Ali Ben Ali warranty. You can also see it in person at any of our branches before you buy.
About usIs the device registered with the Egyptian Drug Authority?
Yes, this device is registered with the Egyptian Drug Authority.
How long is the warranty, and who provides it?
2 years from Ali Ben Ali from the date of purchase, on CONTEC devices. We honour it directly, not through a third party; for any coverage question call the hotline 01212333328.
Maintenance centresIf the device breaks after the warranty, who repairs it?
Our maintenance centre at 31 El Rashidy St – Kasr El Aini, accredited by the General Authority for Industrial Control. Service and genuine spare parts stay available for the device's whole life.
Maintenance centresCan I return or exchange the device?
Yes, within 14 days of delivery, if it is unused, complete with its accessories and in its original packaging. If it arrives defective or different from your order, we replace it or refund it in full. Masks, tubing and any items that contact the patient cannot be returned once opened, for hygiene reasons. Return shipping is on us for a defect or a wrong item; otherwise the customer pays it, unless a free-shipping offer applies.
Exchange and returns policyDo you deliver and install? Should I buy online or at a branch?
We deliver and install in 27 governorates within Egypt. Shipping fees are set after you order and agreed with you by phone or WhatsApp before dispatch. Order on the website or on WhatsApp, or visit our branches: Rashidy and Bostan in Cairo, Alexandria and Mansoura.
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Specifications last updated: 2026-09-15
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