• Measurement of high and low pressure
• Quick and easy installation at the pressure port
• Low refrigerant loss due to tubeless application
• System requirements iOS 8.3 or later, android 4.3 or later and mobile device with Bluetooth® 4.0

Testo makes you even more mobile when it comes to measuring, connected to your smartphone or tablet, the handy high-pressure Testo 549i is suitable for cable-free service and fault finding in air-conditioning and refrigeration systems as well as for their installation. The measuring instrument can be attached directly to the pressure connection. The Testo 549i makes the application considerably easier when working on remote pressure connections thanks to a wireless connection to the smartphone or tablet. Also practical since no hoses are required for measurements, no or very little refrigerant is lost. And when used in combination with the Testo 115i, the thermometer can also be used to calculate individual parameters of refrigeration plants. You can read the measured values conveniently via testo smart probes app on your device. In addition, the app allows the automatic calculation of evaporation and liquefaction temperatures. All measurement data is displayed as a diagram or as a table form.