• Digital manifold with Bluetooth
• 2-way valve block for commissioning, servicing and maintenance of refrigeration systems and heat pumps
• Automatic recognition and controlled by testo Smart App
• Smart App is a free download on Google Play and the Apple App Store
• The smallest digital manifold on the market
• Combine with testo Smart Probes to measure temperature, humidity, and vacuum wirelessly
• Saves time with its fast and easy measurements, clearly presented results and digital documentation
• Common refrigerants list - most important refrigerants available quickly and easily

The testo 550i digital manifold enables technicians to control their daily servicing and maintenance work on refrigeration, air conditioning systems, and heat pumps entirely from their smartphone/tablet. Equipped with a 2-way valve block and rugged hook, the testo 550i saves you time with its fast and easy measurements, clearly presented results and digital documentation. • All activities, from measurement to documenting using the testo Smart App on your smartphone • The smallest digital manifold on the market • Maximum reliability thanks to the extremely rugged housing with IP54 protection class • Optionally expandable with testo Smart Probes for wireless measurement of temperature, humidity, and vacuum