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.

Measuring current with a voltage tester? The innovative testo 755-1 makes this possible &ndash; and is therefore suitable for virtually all daily electrical measuring tasks. The practical automated switch-on function and automatic measurement parameter detection also mean you can work more reliably than ever before with it.&nbsp;

Measuring current with a voltage tester? The innovative testo 755-1 makes this possible &ndash; and is therefore suitable for virtually all daily electrical measuring tasks. The practical automated switch-on function and automatic measurement parameter detection also mean you can work more reliably than ever before with it. Now available with testo 745 non-contact voltage tester for quick checks of voltage presence in AC powered systems.

All-in-one voltage tester and current measuring instrument: the innovative testo 755-2. A multitasker for almost all daily electrical measuring tasks. With automatic measurement parameter detection, exchangeable measuring tips and an extended voltage range up to 1,000 V.&nbsp;

All-in-one voltage tester and current measuring instrument: the innovative testo 755-2. A multitasker for almost all daily electrical measuring tasks. With automatic measurement parameter detection, exchangeable measuring tips and an extended voltage range up to 1,000 V. Now available with testo 745 non-contact voltage tester for quick checks of voltage presence in AC powered systems.

The testo 770-1 clamp meter is ideally suited for non-contact current measurement on tightly packed power cables or conductors with a small diameter. The unique grab mechanism means you can grab each individual cable easily and safely.&nbsp;

The innovative grab mechanism makes the testo 770-2 the perfect clamp meter for non-contact measurements on tightly packed cables with a small diameter. In addition to the standard functions of the testo 770-1 clamp meter, it also offers a temperature adapter and measures current in the &micro;A range.

Non-contact measurement on tightly packed cables is really easy and reliable with the testo 770-3 clamp meter. Its innovative grab mechanism will make your work easy. The most powerful model in the clamp meter series, it offers lots of additional functions for those challenging tasks that you are faced with on a daily basis, e.g. connection to the testo Smart App and other Testo measuring instruments. Thanks to its increased resolution, the clamp meter delivers highly precise results even in the lower current range.

The testo 860i Electrical Kit combines the high-resolution testo 860i Wireless Thermal Imaging Camera with the advanced testo 770-3 Clamp Meter, offering an all-in-one solution for electrical and HVAC professionals for a comprehensive system evaluation. This enables professionals to capture precise thermal images and perform accurate electrical measurements simultaneously, streamlining workflow and improving troubleshooting efficiency&mdash;all seamlessly managed via the testo Smart App.

<div>The testo Monobloc Heat Pump Testing Kit equips engineers with the essential tools for installing, servicing, and maintaining monobloc heat pumps. The kit includes the testo 770-3 clamp meter, designed for accurate electrical measurements, along with 2x testo 115i temperature clamp probes, ideal for use measuring flow and return temperatures. All instruments connect via Bluetooth to the testo Smart App, enabling real-time data monitoring and instant report generation. Housed in a rugged transport case, this kit ensures precision, efficiency, and portability for heat pump professionals.</div>

You can securely store your measuring instrument and accessories in the robust transport bag with a hard outer shell. The two internal mesh compartments ensure the stored items are properly held in place.

Weight	200 g
Dimensions	270 x 150 x 75 mm
Product colour	Black

Transport bag

Transport bag

General technical data