
The Beurer® Pulse Oximeter (FT 90) is an easy-to-use SpO2 and heart rate sensor for momentary readings as a standalone device and in OpenSignals use.
Learn how to use this device with your next biosignals recordings and more in this article.
Highlights
- Infrared measurement method at the fingertip (ideally left index finger)
- Compatible with biosignalsplux and BITalino products in OpenSignals Desktop
- Standalone: record data without PLUX devices using the device’s built-in display (up to 100 readings)
- Bluetooth Low Energy (BLE)-enabled (support for OpenSignals & PLUX APIs coming soon)
Specifications
- Blood Oxygen Saturation (SpO2) and Heart Rate (HR) extraction via red (660nm) and infrared (905nm) light
- Accuracy (SpO2): at 70 –100%, ±2%,
- Accuracy (HR): at 20 – 250bpm, ±2bpm
- Battery-powered: 2×1.5V AAA batteries (included)
- Product Dimensions: 5.8 x 3.2 x 3.4 cm
- Product Weight: 27g (excl. batteries)
Device Interface
The Pulse Oximeter consists of the following interfaces which will be referenced during the first setup and use of the device.

First Use
The Beurer® Pulse Oximeter (PO 60) comes with everything needed to record pulse oximetry data.
When using the device for the first time, insert the included batteries first.

- Slide the battery compartment cover (on the backside of the device) open
- Insert the two included batteries into the pulse oximeter (following the correct polarity as shown)
- Close the battery compartment cover again
Optionally, we also recommend attaching the lanyard included in your device for eatery transport and safe use.e

- Insert the narrow end of the lanyard through the holder as shown
- Draw the other end of the lanyard through the loop at the narrow end and tighten
Measuring Pulse Oximetry Data

- Open the device by pinching together the end of the device where the lanyard holder is placed
- Place your left index finger into the Finger Opening
- Press the function button to start the device
- Wait for measurement to appear on the device’s built-in display
Note: once the finger is removed, the device will switch to Sync Mode (sync displayed on the display) in which the device tries to sync with the official Beurer app to transfer the acquired data. Bluetooth functionality is currently not support in OpenSignals.
Logging the results in OpenSignals Desktop
Results recorded by this device can be manually logged into your OpenSignals recordings during real-time acquisition and in post-processing using the Manual Measurements tool.

Learn everything you need in the dedicated support article here:
OpenSignal’s Manual Measurements
Documentation & Other Information
Beurer provides their own line of health apps for their products. These apps may be available free of charge in the iOS App Store and Google Play store but are not compatible with PLUX software. PLUX does not provide any support for native Beurer apps.