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With this kit, you&rsquo;ll be ready to start your measurements in the commissioning, servicing and maintenance of refrigeration and air conditioning systems and heat pumps straight away: You will get the testo 550s smart digital manifold with Bluetooth and 2-way valve block, two wired clamp temperature probes (NTC) and a rugged transport case. Additional Bluetooth probes, e.g. for wireless measurements of temperature and vacuum, are available separately. *A2L Refrigerant Compliant*

The testo 570s digital manifold with Bluetooth and 4-way valve block is the optimal solution for long-term measurements on refrigeration and air conditioning systems as well as heat pumps. Intelligent error analysis in the testo Smart App allows anomalies to be detected quickly and reliably. testo 570s boasts the world&#39;s longest runtime of up to 360 hours, a large data memory and a high degree of measuring accuracy, making it a reliable partner for both long-term and short-term measurements. 
 
*A2L / A2 / A3 Compliant*

Start your wireless measurements on refrigeration and air conditioning systems and heat pumps straight away. The practical kit containing the testo 570s digital manifold with Bluetooth and 4-way valve block together with the wireless temperature and vacuum probes is ideal for long-term and standard measurements. The intelligent error analysis in the testo Smart App ensures reliable diagnostics following a long-term measurement, eliminating the need for lengthy searches. And with the world&#39;s longest battery life of 360 hours, testo 570s is ideal for long-term measurements, but also for all kinds of short-term applications over the course of a working week. In addition, with a measuring accuracy of 0.25% fs, the manifolds offer maximum precision even at low pressure values. 
 
*A2L / A2 / A3 Compliant*

Start your wireless measurements on refrigeration and air conditioning systems and heat pumps straight away. The practical kit containing the testo 570s digital manifold with Bluetooth and 4-way valve block together with the wireless temperature and vacuum probes plus filling hoses is ideal for long-term and standard measurements. The intelligent error analysis in the testo Smart App ensures reliable diagnostics following a long-term measurement, eliminating the need for lengthy searches. And with the world&#39;s longest battery life of 360 hours, testo 570s is ideal for long-term measurements, but also for all kinds of short-term applications over the course of a working week. In addition, with a measuring accuracy of 0.25% fs, the manifolds offer maximum precision even at low pressure values. 
 
*A2L / A2 / A3 Compliant*

<div style="background-color:#dae4ea; border: 1px solid #648798; padding: 10px;">Are you interested in this measuring instrument? Testo has put together practical kits for you – so you’ll be optimally equipped to tackle your measuring tasks right away <a href="https://www.testo.com/en-US/products/manifold">>> To the products</a></div>

<div style="background-color: #fff4e5;border: 2px solid #ff9900;border-top-left-radius: 16px;border-top-right-radius: 16px;padding: 1rem;margin: 0 -1rem 1.5rem;">FREE VETO MB3 Bag with purchase, now through July 31st, 2026. 
<a href="https://www.testo.com/en-US/promo">>> FIND OUT MORE</a></div>
The kit for wireless measurements in the field of commissioning, servicing and maintenance of refrigeration and air conditioning systems and heat pumps: You will get the testo 550s smart digital manifold with Bluetooth and 2-way valve block, two testo 115i wireless clamp thermometers (Bluetooth, NTC) and a rugged transport case. Additional Bluetooth probes, e.g. for wireless, hose-free vacuum measurements with the testo 552i, are available separately.\ 
*A2L Refrigerant Compliant* 
&nbsp;

<div style="background-color: #fff4e5;border: 2px solid #ff9900;border-top-left-radius: 16px;border-top-right-radius: 16px;padding: 1rem;margin: 0 -1rem 1.5rem;">FREE VETO MB3 Bag with purchase, now through July 31st, 2026. 
<a href="https://www.testo.com/en-US/promo">>> FIND OUT MORE</a></div>
The kit for wireless measurements in the field of commissioning, servicing and maintenance of refrigeration and air conditioning systems and heat pumps: You will get the testo 550s smart digital manifold with Bluetooth and 2-way valve block, two testo 115i wireless clamp thermometers (Bluetooth, NTC), testo 552i wireless vacuum probe (Bluetooth), and a rugged transport case. Additional Bluetooth probes are available separately. *A2L Refrigerant Compliant*

<div style="background-color: #fff4e5;border: 2px solid #ff9900;border-top-left-radius: 16px;border-top-right-radius: 16px;padding: 1rem;margin: 0 -1rem 1.5rem;">FREE VETO MB3 Bag with purchase, now through July 31st, 2026. 
<a href="https://www.testo.com/en-US/promo">>> FIND OUT MORE</a></div>
The kit for wireless measurements in the field of commissioning, servicing and maintenance of refrigeration and air conditioning systems and heat pumps: You will get the testo 550s smart digital manifold with Bluetooth and 2-way valve block, two testo 115i wireless clamp thermometers (Bluetooth, NTC), testo 552i wireless vacuum probe (Bluetooth),&nbsp; a set of 3 refrigerant hoses and a rugged transport case. Additional Bluetooth probes are available separately. *A2L Refrigerant Compliant*

The testo 557s digital manifold with Bluetooth and a 4-way valve block features a large graphic display, a compact, robust housing, guided measurement menus and the testo Smart App. Top-quality measurement technology, a high degree of reliability and smart functions for quick, easy measurements and documentation make the testo 557s manifold a reliable partner for your commissioning, servicing and maintenance of refrigeration and air conditioning systems and heat pumps.

Start your wireless measurements on refrigeration and air conditioning systems and heat pumps straight away. Thanks to the Bluetooth vacuum probe supplied, you can even measure vacuum without any cables or hoses. You will get the testo 557s smart digital manifold with Bluetooth and 4-way valve block, one testo 552i wireless vacuum probe (Bluetooth), two testo 115i wireless clamp thermometers (Bluetooth, NTC) and a robust transport case. For other wireless measurements, other optionally available testo Smart Probes are also ideal. 
 
*A2L Compliant*

For completely wireless measurements on refrigeration and air conditioning systems and heat pumps. Thanks to the Bluetooth vacuum probe supplied, you can even measure vacuum without any cables or hoses. You will get the testo 557s smart digital manifold with Bluetooth and 4-way valve block, one testo 552i wireless vacuum probe (Bluetooth), two testo 115i wireless clamp thermometers (Bluetooth, NTC), a 4 hose set&nbsp; and a rugged transport case. For other wireless measurements, the Testo Smart Probes are ideal. 
 
*A2L Compliant*

The Testo NTC spring clamp probe is compatible with the following Testo products: testo 550, testo 557, and testo 570.What's Included: Spring Clamp Probe (NTC)

Testo NTC Spring Clamp Probes will allow you to properly measure Evaporator and Condensor temperatures in real time using your Testo Digital Manifold.   Using the spring clamp probes will also allow the manifold to calculate Superheat and Subcool values, ensuring that they are at a correct, optimized level, and the refrigeration system is running at maximum efficiency

General technical data	Weight 3.99 oz. / 113 g
	Dimensions 6.50 x 3.37 x 0.83 in. / 165 x 85.7 x 21 mm
	Diameter 0.197 in.; 2.559 in. / 5 mm; 65 mm
	Cable length 3.937 ft. / 1.2 m
	Product colour Black

Temperature - NTC	Measuring range -58.0° to 248.0 °F / -50 to +120 °C
Temperature - NTC	Accuracy ±0.4 °F (-13° to 176 °F) / ±0.2 °C (-25 to +80 °C)

Spring Clamp Probe (NTC) - For pipes from ¼” to 2 1/2”

Spring Clamp Probe (NTC) - For pipes from ¼” to 2 1/2”

General technical data

General technical data

Temperature - NTC

Temperature - NTC