testo 550s – Smart digital manifold with Bluetooth and 2-way valve block

Order-Nr : 0564 5500

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  • All results at a glance thanks to the large graphic display
  • Exceptionally compact and reliable thanks to the easy-to-handle, rugged housing with IP 54 protection class
  • Simple, wireless measurement of vacuum and temperature via automatic Bluetooth® connection
  • Even greater flexibility for your measurements and documentation with the testo Smart App

The testo 550s digital manifold with Bluetooth and a 2-way valve block features a large graphic display, a compact, robust housing, guided measurement menus and the testo Smart App. Top-quality measurement technology, a high degree of reliability and smart functions for quick, easy measurements and documentation make the testo 550s manifold a reliable partner for your commissioning, servicing and maintenance of refrigeration and air conditioning systems and heat pumps.


Product Description

Easier, more flexible measurements and documentation: With the testo 550s digital manifold with Bluetooth and 2-way valve block, you‘ll be ideally equipped for your measuring tasks in the field of commissioning, servicing and maintenance of refrigeration and air conditioning systems and heat pumps.

testo 550s – Smart digital manifold with Bluetooth and 2-way valve block

  • For exceptionally fast measurements on refrigeration and air conditioning systems and heat pumps
  • Large graphic display for easy evaluation of measurement results
  • Stored programs guide you through the measurement and make it possible to automatically determine key system parameters such as superheating, pressure drop test or evacuation
  • Straightforward to handle, with maximum flexibility for your application: Bluetooth probes for temperature, pressure and humidity connect to the manifold automatically
  • testo Smart App: Create digital documentation straight away on site, set your own favourites, always have the latest refrigerants thanks to automatic updates
  • Continuously high performance in all conditions: You can depend on this manifold from Testo – it combines proven Testo quality with excellent robustness
Measuring range -58° to 302 °F / -50 to +150 °C
Accuracy ±0.9 °F / ±0.5 °C
Resolution 0.1 °F / 0.1 °C
Probe connection 2 x plug-in (NTC)
Pressure measurement
Measuring range -15 to 870 psi / -1 to 60 bar
Accuracy ±0.5 % Fs
Resolution 0.14 psi / 0.01 bar
Probe connection 3 x 7/16″ – UNF
Overload rel. (high pressure) 943 psi / 65 bar
General technical data
Weight 29.14 oz. / 826 g
Dimensions 8.27 x 4.76 x 2.36 in. / 210 x 121 x 60 mm (LxWxH)
Operating temperature -4° to 122 °F / -20 to +50 °C
Protection class IP54
System requirements requires iOS 11.0 or newer; requires Android 6.0 or newer; requires mobile end device with Bluetooth 4.0
Product colour Black
Auto-off 10 min*
Battery type 4 x AA batteries
Battery life 250 h with no illumination, no Bluetooth®; 100 h with illumination and Bluetooth®
Data transfer Bluetooth®
Radio range 492.12 ft. / 150 m
Refrigerants in instrument R407H; R23; R290; R1234yf; R442A; R134a; R123; R452B; R438A; R421A; R453a; R401B; R1233zd; R410A; R407A; R407C; R452A; R401A; R422C; R427A; R422B; R424A; R125; R414B; R404A; R408A; R448A; R422D; R12; R114; R421B; R449A; R409A; R420A; R444B; R32; R454A; R124; R402A; R450A; R407F; R416A; R13; R437A; R1234ze; R454B; R402B; R22; R434A; R454C; R455A; R458A; R500; R502; R503; R507; R513A; R600a; R718 (H₂O); R744 (CO₂)
Refrigerants update via App R11; FX80; I12A; R1150; R1270; R13B1; R14; R142B; R152A; R161; R170; R227; R236fa; R245fa; R401C; R406A; R407B; R407D; R41; Ra11A; R412A; R413A; R417A; R417B; R417C; R422A; R426A; R508A; R508B; R600; RIS89; SP22
Storage temperature -4° to 140 °F / -20 to +60 °C

* when not connected via Bluetooth

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Delivery Scope

Are you interested in this measuring instrument? Testo has put together practical kits for you – so you’ll be optimally equipped to tackle your measuring tasks right away. Refer to the following kit options below:

Additional information



Order No

0564 5500