To improve heat transfer in surface probes

The testo 112 is a highly accurate, calibratable 1-channel thermometer with PTB approval, making it suitable for official control measurements in sectors like food safety, pharmaceuticals, and veterinary medicine. Compatible with both NTC and Pt100 probes (sold separately), it offers a broad temperature measuring range from -50 to +300 &deg;C. Key features include a large, illuminated display, minimum/maximum value memory, and acoustic alarms for limit value breaches. For enhanced protection in demanding environments, the optional TopSafe case provides IP65-rated water and dirt resistance. Please note, a conformity assessment is required for official measurements, with separate fees applicable for the instrument and probes.​

The testo 175 T2 temperature data logger is ideally suited if you want to use one instrument to monitor air temperature and to record additional temperature values (e.g. core temperature) on a second channel at the same time. In particular, it is the perfect solution for parallel temperature control of the ambient conditions and the goods themselves when storing food.

The data logger testo 176 H1 allows the monitoring of temperature and humidity in warehouses and buildings. With the testo 176 H1, you can examine whether mould in a house or apartment has been caused by insufficient ventilation or by building damage.

<div style="background-color:#dae4ea; border: 1px solid #648798; padding: 10px;">Are you familiar with the current version? Why not enjoy the benefits that it has to offer: <a href="https://www.testo.com/55x">>> To the new version</a></div>

Start your wireless measurements on refrigeration and air conditioning systems and heat pumps straight away with the testo 558s Heat Pump Kit. This all-in-one solution includes the testo 558s digital manifold, 2x testo 115i temperature clamps, testo 552i vacuum probe, testo 560i refrigerant scale with valve, and the testo 770-3 clamp meter, giving you the ideal tools for precise and efficient servicing and maintenance. 
The testo 558s features intuitive touchscreen operation, clear measurement graphs on a large color display, and key-based controls for easy use&mdash;even with gloves. Designed for maximum flexibility, it supports Bluetooth connectivity to wireless temperature and vacuum probes, enabling seamless data transfer and real-time monitoring. 
With A3 and A2L refrigerant compatibility, an IP54-rated rugged design, and a hybrid power system using both rechargeable and non-rechargeable batteries, the testo 558s Heat Pump Kit is built for every challenge.

Start your wireless measurements on refrigeration and air conditioning systems and heat pumps straight away with the testo 558s Heat Pump Kit + hoses. This all-in-one solution includes the testo 558s digital manifold, 2x testo 115i temperature clamps, testo 552i vacuum probe, testo 560i refrigerant scale with valve, testo 770-3 clamp meter, and our hose set,&nbsp;giving you the ideal tools for precise and efficient servicing and maintenance. 
The testo 558s features intuitive touchscreen operation, clear measurement graphs on a large color display, and key-based controls for easy use&mdash;even with gloves. Designed for maximum flexibility, it supports Bluetooth connectivity to wireless temperature and vacuum probes, enabling seamless data transfer and real-time monitoring. 
With A3 and A2L refrigerant compatibility, an IP54-rated rugged design, and a hybrid power system using both rechargeable and non-rechargeable batteries, the testo 558s Heat Pump Kit is built for every challenge.

Start your measurements on refrigeration and air conditioning systems and heat pumps straight away with the testo 558s Heat Pump Kit. This all-in-one solution includes the testo 558s digital manifold, 2x testo 115i temperature clamps, testo 552i vacuum probe, testo 560i refrigerant scale with valve, and the testo 770-3 clamp meter, giving you the ideal tools for precise and efficient servicing and maintenance. 
 
The testo 558s features intuitive touchscreen operation, clear measurement graphs on a large color display, and key-based controls for easy use&mdash;even with gloves. Designed for maximum flexibility, it supports Bluetooth connectivity to wireless temperature and vacuum probes, enabling seamless data transfer and real-time monitoring. 
With A3 and A2L refrigerant compatibility, an IP54-rated rugged design, and a hybrid power system using both rechargeable and non-rechargeable batteries, the testo 558s Heat Pump Kit is built for every challenge.

Start your wireless measurements on refrigeration and air conditioning systems and heat pumps straight away with the testo 558s Heat Pump Kit + 4-piece hose set. This all-in-one solution includes the testo 558s digital manifold, 2x testo 115i temperature clamps, testo 552i vacuum probe, testo 560i refrigerant scale with valve, testo 770-3 clamp meter, and our updated 4-piece hose set,&nbsp;giving you the ideal tools for precise and efficient servicing and maintenance. 
The testo 558s features intuitive touchscreen operation, clear measurement graphs on a large color display, and key-based controls for easy use&mdash;even with gloves. Designed for maximum flexibility, it supports Bluetooth connectivity to wireless temperature and vacuum probes, enabling seamless data transfer and real-time monitoring. 
With A3 and A2L refrigerant compatibility, an IP54-rated rugged design, and a hybrid power system using both rechargeable and non-rechargeable batteries, the testo 558s Heat Pump Kit is built for every challenge.

Start your wireless measurements on refrigeration and air conditioning systems and heat pumps straight away. The practical kit containing the testo 558s digital manifold with Bluetooth connection to the wireless temperature and vacuum probes, together with the 4-hose charging set included in the kit, offers the ideal basis for carrying out everyday measuring tasks. The testo 558s offers intuitive operation thanks to its touchscreen and clear measurement graphs on a large colour display. In addition to the touchscreen, the manifold can also be operated via keys when working with gloves. Thanks to its A3 and A2L compatibility, high robustness with IP54 and hybrid charging system comprising rechargeable and non-rechargeable batteries, the manifold is ideal for every situation.

Start your wireless measurements on refrigeration and air conditioning systems and heat pumps straight away. The practical kit containing the testo&nbsp;558s digital manifold with Bluetooth connection to the wireless temperature and vacuum probes, together with the hose set included in the kit, offers the ideal basis for carrying out everyday measuring tasks. The testo&nbsp;558s offers intuitive operation thanks to its touchscreen and clear measurement graphs on a large colour display. In addition to the touchscreen, the manifold can also be operated via keys when working with gloves. Thanks to its A3 and A2L compatibility, high robustness with IP54 and hybrid charging system comprising rechargeable and non-rechargeable batteries, the manifold is ideal for every situation.

The testo 558s Ultimate Refrigeration Kit is the premier all-in-one solution for HVAC/R professionals, delivering a completely digital and wireless workflow for commissioning, servicing, and maintaining air conditioning and refrigeration systems. At the heart of the kit is the testo 558s Digital Manifold, featuring a user-friendly touchscreen display for intuitive control and on-the-spot analysis of pressures, superheat, and subcooling. The kit&#39;s other components, including the testo 115i Clamp Thermometers and the testo 552i Vacuum Probe, seamlessly connect to the manifold via Bluetooth, eliminating the need for cumbersome hoses and cables.

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'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.

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 4 x 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.

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.

The testo 558s offers an intuitive app feel in the manifold, with touchscreen and clear measurement graphs on a large colour display. In addition to the touchscreen, the manifold can also be operated via keys when working with gloves. Thanks to its A3 and A2L compatibility, high robustness with IP54 and hybrid charging system comprising rechargeable and non-rechargeable batteries, the manifold is ideal for every situation.

Start your wireless measurements on refrigeration and air conditioning systems and heat pumps straight away with the testo 558s Smart Vacuum Kit. This all-in-one solution includes the testo 558s digital manifold, 2x testo 115i temperature clamps, and a&nbsp;testo 552i vacuum probe,&nbsp;giving you the ideal tools for precise and efficient servicing and maintenance. 
The testo 558s features intuitive touchscreen operation, clear measurement graphs on a large color display, and key-based controls for easy use&mdash;even with gloves. Designed for maximum flexibility, it supports Bluetooth connectivity to wireless temperature and vacuum probes, enabling seamless data transfer and real-time monitoring. 
With A3 and A2L refrigerant compatibility, an IP54-rated rugged design, and a hybrid power system using both rechargeable and non-rechargeable batteries, the testo 558s Smart Vacuum Kit is built for every challenge.

Start your measurements on refrigeration and air conditioning systems and heat pumps straight away with the&nbsp;testo 558s Smart Vacuum Kit. This all-in-one solution includes the&nbsp;testo 558s digital manifold,&nbsp;2x testo 115i temperature clamps, and a&nbsp;testo 552i vacuum probe,&nbsp;giving you the ideal tools for precise and efficient servicing and maintenance. 
The&nbsp;testo 558s&nbsp;features intuitive touchscreen operation, clear measurement graphs on a large color display, and key-based controls for easy use&mdash;even with gloves. Designed for maximum flexibility, it supports&nbsp;Bluetooth connectivity&nbsp;to wireless temperature and vacuum probes, enabling seamless data transfer and real-time monitoring. 
With&nbsp;A3 and A2L refrigerant compatibility, an&nbsp;IP54-rated rugged design, and a&nbsp;hybrid power system&nbsp;using both rechargeable and non-rechargeable batteries, the&nbsp;testo 558s Smart Vacuum Kit&nbsp;is built for every challenge.

The testo Waterproof Surface Probe is a precision temperature measurement tool designed for surface applications in cold and damp environments. Featuring a high-accuracy NTC sensor, it provides measurement precision of up to &plusmn;0.2 &deg;C, even in low temperature conditions. 
 
With its robust waterproof housing, the probe is well-suited for refrigeration systems, cold storage units, or outdoor installations, ensuring reliable performance and durability. It is specifically shaped for use on flat surfaces, making it an ideal companion in both industrial and food sector environments. 
 
If this probe does not meet your exact needs, please contact us! We offer a wide range of standard probes and can manufacture customised solutions to meet your specific requirements.

Waterproof NTC surface probe with &plusmn;0.2 &deg;C accuracy, ideal for flat surface measurements on refrigeration systems, cold storage areas, and outdoor environments. Measuring range: -50 to +150 &deg;C.

Temperature - NTC	Measuring range -50 to +150 °C ¹⁾
	Accuracy ±0.5 % of mv (100 to +150 °C) ±0.2 °C (-25 to +74.9 °C) ±0.4 °C (Remaining Range)
	Reaction time 35 s
1) Long-term measurement range +125°C, short-term +150°C or +140°C (2 minutes)

General technical data	Weight 106 g
	Dimensions 140 x 28 x 24 mm
	Length probe shaft 115 mm
	Fixed cable yes
	Cable length 1.2 m
	Diameter probe shaft tip 6 mm
	Diameter probe shaft 5 mm
	Length probe shaft tip 50 mm
	Product colour grey

Waterproof surface probe (NTC)

Waterproof surface probe (NTC)

Temperature - NTC

Temperature - NTC

General technical data

General technical data

Accessories