Directly from the manufacturer
Free shipping
Fast delivery
Secure payment
Directly from the manufacturer












The kit for wireless measurements in the field of commissioning, servicing and maintenance of refrigeration and air conditioning systems and heat pumps: You will get the testo 550s smart digital manifold with Bluetooth and 2-way valve block, two testo 115i wireless clamp thermometers (Bluetooth, NTC) and a rugged transport case. Additional Bluetooth probes, e.g. for wireless, hose-free vacuum measurements with the testo 552i, are available separately.\
*A2L Refrigerant Compliant*
Temperature | 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 life 250 h with no illumination, no Bluetooth<sup>®</sup>; 100 h with illumination and Bluetooth<sup>®</sup> | |
Battery type 4 x AA batteries | |
Data transfer Bluetooth® | |
Radio range 492.12 ft. / 150 m | |
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 | |
Refrigerant A2L / A3 compatibel | |
Storage temperature -4° to 140 °F / -20 to +60 °C | |
| * when not connected via Bluetooth | |
Temperature - NTC | Measuring range -40° to 302 °F / -40 to +150 °C |
|---|---|
Accuracy ±2.3 °F (-4° to 185 °F) / ±1.3 °C (-20 to +85 °C) | |
Resolution 0.1 °F / 0.1 °C | |
General technical data | Weight 4.49 oz. / 127.4 g |
|---|---|
Dimensions 7 x 4 x 1 in. / 183 x 90 x 30 mm | |
Operating temperature -4° to 122 °F / -20 to +50 °C | |
Housing Plastic | |
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/orange | |
Battery type 3 x AAA | |
Battery life 150 h | |
Storage temperature -4° to 140 °F / -20 to +60 °C | |
General technical data | System requirements requires iOS 13.0 or newer; requires Android 8.0 or newer; requires mobile end device with Bluetooth 4.0 |
|---|---|
