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testo 550s digital manifold
  • testo 550s digital manifold
  • testo 550s digital manifold
  • testo 550s digital manifold
  • testo 550s digital manifold

Testo 550s Basic Kit

testo approved distributor

Includes: testo 550s smart digital manifold with Bluetooth and 2-way valve block, two wired clamp temperature probes (NTC) and a rugged transport case. Additional Bluetooth probes, e.g. for wireless measurements of temperature and vacuum, are available separately.

0564 5501 01
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The testo 550s digital manifold with 2-way valve block enables you to carry out your measurements on refrigeration, air conditioning systems, and heat pumps fast. The large display helps evaluate the results in graphic forms. Stored programs guide you through measurements and enable the automatic determination of numerous important system parameters such as superheating/subcooling, target superheat, cooling/heating capacity and many other areas.

Bluetooth probes for temperature, vacuum, and humidity can be easily connected and offer maximum flexibility in their application. In conjunction with the testo Smart App, you can take care of digital documentation directly on site.

Its proven quality and great durability guarantee the continuously high performance of your manifold in all conditions.


Large graphic display shows all results at a glance.
Simple wireless humidity, temperature, and vacuum measurements via Bluetooth connectivity.
Fast and easy pressure value display in analog look.
Rugged housing with IP 54 for maximum reliability in daily use.
Refrigerant listing updates automatically using the App.
Integrated calculation of the target superheat.
Easy to Use.

Testo 55x Product Video

Testo 550s Specifications
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
Dimensions 8.27 x 4.76 x 2.36 in. / 210 x 121 x 60 mm (L x W x H).
Operating temperature -4° to 122 °F / -20 to +50 °C.
Data transfer Bluetooth®.
Radio range 492.12 ft. / 150 m.
Battery type 4 x AA batteries.
Battery life 250 h with no illumination, no Bluetooth®; 100 h with illumination and Bluetooth®.
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.
Weight 29.14 oz. / 826 g.
Auto-off 10 min (when not connected via Bluetooth).
Protection class IP54.
System requirements Requires iOS 12.0 or newer; requires Android 6.0 or newer; requires mobile end device with Bluetooth 4.0.


Testo 550s Datasheet

PDF Specifications of the Testo 550s smart digital manifold with wired clamp temperature probes.

Download (2.39M)

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Testo 550s Basic Kit

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