Get started straight away with your wireless measurements on refrigeration and air-conditioning systems and heat pumps. This practical set with the testo 558s digital installation tool with Bluetooth connection to the wireless temperature and vacuum probes and the set of 4 filling hoses included in the set provides the ideal basis for everyday measuring tasks. The testo 558s is intuitive to use thanks to a touchscreen and clear measurement graphics on a large colour display. In addition to the touchscreen, the installation tool can also be operated using buttons when working with gloves. Thanks to A3 and A2L compatibility, high robustness with IP 54 and a hybrid charging system consisting of a rechargeable and standard batteries, the installation tool is ideal for every situation. Included in delivery testo 558s digital 4-way installation tool 2x testo 115i wireless clamp thermometers 1x testo 552i wireless vacuum probe 3x filling hose set with valve 1/4" - 1/4" SAE (7/16" - 7/16" UNF) 1x vacuum hose 3/8" SAE (5/8" UNF) Carrying case USB-C cable testo smart app (free download) Calibration log User manual https://elecena.pl/product/29613920/0564-5583-testo-558s-smart-digital-installation-tool-smart-vacuum-set 2025-12-15 https://elecena.pl/product/29613920/0564-5583-testo-558s-smart-digital-installation-tool-smart-vacuum-set 2026-03-18