Computers / Storage
User Manual for Testo 550s Digital Manifold
Quick guide for the Testo 550s digital manifold. Includes setup instructions, battery installation, technical specifications, and regulatory compliance information.
Quick answers from the manual
Quick answer
- The Testo 550s is a digital manifold. To start, install 4x AA batteries and download the Testo Smart App to configure the device. p. 1
Key actions
- Install 4x AA batteries in the rear compartment. p. 1
- Download the Testo Smart App for configuration. p. 1
First start
- Insert batteries, power on the device, and follow the on-screen menu to select language and settings. p. 1
Technical specifications
| Parameter | Value | Meaning | Pages |
|---|---|---|---|
| Battery | 4x AA Alkaline | Power source | p. 1 |
| Operating Temperature | -20°C to +50°C | Allowed ambient temperature | p. 1 |
| Bluetooth | BLE 5.0 | Wireless connectivity | p. 2 |
Where to find it in the PDF
- Quick Start and Specifications p. 1
- Regulatory and Certification p. 2
Table of contents
Quick guide from the manual
The Testo 550s is a digital manifold designed for HVAC and refrigeration systems. To begin using the device, you must install the batteries and download the Testo Smart App to configure the unit and access advanced features.
Getting Started
Follow these steps to prepare your device for operation:
- Battery Installation: Open the battery compartment on the back of the device. Insert 4x AA Alkaline batteries, ensuring correct polarity.
- App Setup: Download the Testo Smart App on your smartphone. Use the QR code provided in the manual or search for the app in your app store.
- Power On: Once batteries are installed, power on the device and follow the on-screen instructions to select your language and complete the initial setup.
Device Overview
The device features a high-contrast display, navigation buttons (ESC, Up, Down, Menu/Enter), and connection ports for hoses. A hanging hook is provided on the top of the unit for convenient placement during operation.
Technical Specifications
- Battery: 4x AA Alkaline (approx. 100 hours of operation).
- Operating Temperature: -20°C to +50°C.
- Storage Temperature: -20°C to +60°C.
- Pressure Range: -1 to 60 bar (-14 to 870 psi).
- Bluetooth: BLE 5.0 with a typical range of 100m in a free field.
- Protection Class: IP 54.
- Dimensions: 212 x 112.5 x 62.8 mm.
- Weight: Approximately 1300g.
Regulatory and Safety Information
This device complies with Part 15 of the FCC Rules and Industry Canada licence-exempt RSS standards. Operation is subject to the condition that the device does not cause harmful interference and must accept any interference received. The device contains a wireless module that should only be used in countries where certification has been granted. For the EU Declaration of Conformity, please visit the Testo website under the product-specific downloads section.
Manufacturer information
Testo SE & Co. KGaA
Practical help
Common problems
Device not connecting to the app
Ensure Bluetooth is enabled on your smartphone and the device is within the 100m range. Verify that the Testo Smart App is installed and updated.
Short battery life
Ensure you are using 4x AA Alkaline batteries. Check that the batteries are inserted correctly according to the polarity markings.
Before use
- Check the device for any physical damage.
- Install 4x AA Alkaline batteries.
- Download the Testo Smart App.
- Ensure the operating environment is between -20°C and +50°C.
- Verify that the device is within the pressure range of -1 to 60 bar.
Specs in practice
- Bluetooth Range
- Up to 100 meters in an open, free field environment.
- Pressure Range
- The device can measure pressures from -1 to 60 bar (-14 to 870 psi).
Images and diagrams
- The front panel includes the display, ESC, navigation arrows, and Menu/Enter buttons.
- The rear panel houses the battery compartment.
- The top of the unit features a retractable hook for hanging.
Model compatibility
- The wireless module is subject to specific country regulations; ensure use is permitted in your region.
- Requires Testo Smart App for full functionality.
Manual page author
David Miller
Documentation analyst
Organizes user manual content into clear summaries, with attention to model details, product context, and everyday usability.