testo 550 - Digital Manifold Kit with Bluetooth

Order-Nr.  0563 1550

  • Includes two temperature clamp probes (two channel NTC temperature inputs) and service case

  • Large 2-line backlit display

  • Rugged housing with additional one year warranty (with registration)

  • Live data feed integration now available with the MeasureQuick App.

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Product Description

The rugged housing of the testo 550 digital manifold includes a metal frame around the display, which protects the digital manifold from impact. Now with 60 refrigerant profiles and added functionality for leak tests, the testo 550 digital manifold is versatile enough to become the tool for every job. You can view measurement data on your smartphone or tablet, enabling you to quickly and conveniently complete and document your job. Then, be able to finalize the documentation and send the report and invoice via email, right from the job site. The app can also be used to download new refrigerants from online, directly to the manifold.
  • Measures high side / low side pressures and temperatures, and displays saturation and evaporation temperatures
  • Bluetooth / app integration for monitoring, report generation, and sending reports and invoices via email (range of 65 feet)
  • 2-way valve block with three connections
  • 60 refrigerant profiles stored in the instrument
  • Simplified menu structure
  • Automatic superheat and subcooling calculations

Delivery Scope

testo 550 digital manifold with Bluetooth, 2x clamp probes, batteries, case, certificate of conformity, and manual

Technical Data


Measuring range

-58° to 302 °F / -50 to +150 °C


±0.9 °F / ±0.5 °C


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


±0.5 % Fs


0.14 psi / 0.01 bar

Probe connection

3 x 7/16" – UNF

Overload rel. (high pressure)

943 psi / 65 bar


Measuring range

-15 to 0 psi (indication) / -1 to 0 bar

General technical data


85.50 oz. / 2424 g


7.87 x 4.29 x 2.48 in. / 200 x 109 x 63 mm

Operating temperature

-4° to 122 °F / -20 to +50 °C

Protection class


System requirements

requires iOS 12.0 or newer; requires Android 6.0 or newer; requires mobile end device with Bluetooth 4.0

Product colour


Battery life

approx. 250h (display light off, Bluetooth off)

Refrigerants in instrument

R114; R12; R123; R1233zd; R1234yf; R1234ze; R124; R125; R13; R134a; R22; R23; R290; R32; R401A; R401B; R402A; R402B; R404A; R407A; R407C; R407F; R407H; R408A; R409A; R410A; R414B; R416A; R420A; R421A; R421B; R422B; R422C; R422D; R424A; R427A; R434A; R437A; R438A; R442A; R444B; R448A; R449A; R450A; R452A; R452B; R453a; R454A; R454B; 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



$ 72.00
excl. tax
 Efficient, robust NTC air probe 

Order Number: 0613 1712



Transport case for extensive accessories

Order Number: 0516 0012

$ 151.00
excl. tax
$ 46.00
excl. tax