The automatic filling system consists of the digital refrigerant scale testo 560i and an intelligent valve. This makes the filling of refrigeration systems and heat pumps revolutionarily simple. The scale and intelligent valve enable automatic and precise filling to target values thanks to patented technology. They work together with Testo's technician aids and the testo Smart App for smartphones and tablets. The refrigerant filling is carried out automatically and precisely according to target superheat, subcooling, and weight. There is a wireless connection and operation with Testo technician aids and the testo Smart App via Bluetooth. All measurement values related to the filling process are visible at a glance, and the measurement data is stored in the testo Smart App.