Includes all taxes

Testo 552i Digital Vacuum Gauge Smartphone App Controlled Wireless Air Conditioning
Refrigeration Systems Vacuum Probe
Order-Nr. 0564 2552
* Identify vacuum quickly and easily by means of the graphical display in the App or on the digital manifold screen
* Connects automatically via Bluetooth®to the testo Smart App and digital manifolds
* Exceptionally compact and reliable thanks to the robust, easy-to-handle housing with IP 54 protection class
* Easy installation at any service port thanks to the integrated 45° angle
* Use the testo 552i vacuum probe with Bluetooth to measure vacuum wirelessly with speed, ease and precision via just one service port – with no loss of refrigerant. The testo Smart App supports you with numerous intelligent features – for example, you can see the vacuum by simply glancing at the graphic illustration in the app or on the manifold’s display. Thanks to its robust, convenient housing and proven measuring technology, the vacuum probe is compact and reliable when carrying out your vacuum measurements on refrigeration and air conditioning systems and heat pumps.
Product Description
Wireless vacuum measurements via just one service port: The testo 552i app-controlled vacuum probe with Bluetooth enhances the Testo Smart Probes portfolio. It delivers reliable measurement results, is robust and easy to use – the vacuum probe provides optimum support for proper evacuation of refrigeration and air conditioning systems and heat pumps.
Testo 552i - App-controlled wireless vacuum probe
* For wireless, hose-free vacuum measurements on refrigeration and air conditioning systems and heat pumps using just only one service port – with no loss of refrigerant
testo Smart App – get an overview of everything: Detect vacuum quickly and easily via a graphic illustration in the app, with an alert in the event of any critical values, e.g. through vibration of the smartphone
* Automatic connection via Bluetooth: The probe connects to the testo Smart App or to the appropriate digital manifold from Testo, e.g. testo 557s, testo 550s – so you can also read measured values conveniently on your manifold’s large display
* Convenient, robust housing with protection class IP 54
* Built-in 45° angle for easy installation at any service port
* Continuously high performance in all conditions: You can depend on this wireless vacuum probe from Testo – it combines proven Testo quality with excellent robustness
Delivery Scope
App-controlled testo 552i wireless vacuum probe, including batteries and calibration protocol.
Technical Data
Absolute Pressure | |
Measuring range | 0 to 26.66 mbar / 0 to 20000 micron |
Accuracy | ±10 micron + 10 % of mv (100 to 1000 micron) ±(1 |
Resolution | 1 micron (0 to 1000 micron) / 10 micron (1000 to 2000 micron) / 100 micron (2000 to 5000 micron) / |
Overload | absolute: 6.0 bar / 87 psi (relative: 5.0 bar / 72 psi) |
General technical data | |
Weight | 142 g |
Dimensions | 150 x 32 x 31 mm (LxWxH) |
Operating temperature | -10 to +50 °C |
Protection class | IP54 |
System requirements | requires iOS 13.0 or newer; requires Android 8.0 or newer; requires mobile end device with Bluetooth 4.2 |
Product colour | black/orange |
Auto-off | 10 min* |
Battery type | 3 AAA micro batteries |
Battery life | 39 h |
Connection | 7/16“ UNF |
Interface | Bluetooth® 4.2 |
Storage temperature | -20 to +50 °C |
Notes:Shipping company does not accept liquids and powders and dry batteries










Payment Policy – BILLIONS BIRDS
At BILLIONS BIRDS, we are committed to providing a safe, secure, and seamless payment experience for our customers.
1. Accepted Payment Methods
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Delivery Policy – BILLIONS BIRDS
At BILLIONS BIRDS, we are dedicated to delivering your orders safely and efficiently.
1. Order Processing
All orders are processed within 1–3 business days after payment confirmation. Orders are not processed or shipped on weekends or public holidays.
2. Shipping Times
Estimated delivery times vary depending on your location:
Domestic Shipping: 3–7 business days
International Shipping: 7–15 business days
Please note that delivery times are estimates and may vary due to customs procedures, carrier delays, weather conditions, or other unforeseen circumstances.
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Shipping fees are calculated at checkout based on your location and selected shipping method. Any customs duties, taxes, or import fees are the customer's responsibility.
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Once your order has been shipped, you will receive a confirmation email with tracking details (if available) so you can monitor your package.
5. Delivery Issues
If your order is delayed, lost, or arrives damaged, please contact us within 7 days of the expected delivery date. We will work with the shipping carrier to resolve the issue as quickly as possible.
6. Incorrect Shipping Information
Customers are responsible for providing accurate shipping details at checkout. BILLIONS BIRDS is not responsible for orders shipped to incorrect addresses provided by the customer.
Refund Policy – BILLIONS BIRDS
At BILLIONS BIRDS, customer satisfaction is our top priority. If you are not completely satisfied with your purchase, we’re here to help.
1. Return Eligibility
You may request a return within 14 days of receiving your order. To qualify for a return:
The item must be unused, unworn, and in the same condition as received.
The item must be in its original packaging.
Proof of purchase (order confirmation or receipt) is required.
Certain items may not be eligible for return, including clearance items, gift cards, or personalised/custom products.
2. Non-Refundable Items
The following items are non-refundable:
Final sale or discounted items
Gift cards
Items damaged due to misuse, negligence, or improper care
3. Return Process
To initiate a return, please contact our customer support team with your order number and reason for return. If your return is approved, you will receive instructions for returning the item.
Unless the item is defective or incorrect, customers are responsible for return shipping costs.
4. Refund Processing
Once we receive and inspect your returned item:
We will notify you of the approval or rejection of your refund.
If approved, the refund will be issued to your original payment method within 5–10 business days.
Please note that banks or payment providers may require additional time to process refunds.
5. Damaged or Incorrect Items
If you receive a damaged, defective, or incorrect item, please contact us within 7 days of delivery and provide clear photos of the product and packaging. We will arrange a replacement or full refund at no additional cost.
6. Late or Missing Refunds
If you have not received your refund:
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Contact your credit card company or payment provider.
If the issue persists, don't hesitate to contact our support team for assistance.
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