The Testo 550 Smart Set wireless digital HVAC/R tester set for wireless measurements in the field of commissioning, service and maintenance of refrigeration and air conditioning systems as well as heat pumps. Included in the set are the smart digital test tool Testo 550s including Bluetooth and 2-way valve block, two wireless pliers thermometer Testo 115i (Bluetooth, NTC), set with 3 filling hoses and a robust carrying case. Additional Bluetooth sensors, e.g. for wire and tubeless vacuum measurement with Testo 552i are available separately. .
eBay