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DOWNLOAD DATASHEET TESTO 550s
The testo 550s digital manifold delivers professional-grade refrigeration diagnostics with Bluetooth connectivity and integrated 2-way valve block. Its large graphic display and guided measurement menus streamline commissioning, servicing, and maintenance workflows for heat pumps, air conditioning, and refrigeration systems. Paired with the testo Smart App, this compact, robust instrument combines precision measurement technology with intuitive operation—enabling faster documentation and reliable performance across routine and complex service tasks.
| Temperature | |
| Measuring Range | -50 to +150 °C |
| Accuracy | ±0.5 °C |
| Resolution | 0.1 °C |
| Probe Connection | 2 x plug-in (NTC) |
| Pressure Measurement | |
| Measuring Range | -1 to 60 bar |
| Accuracy | ±0.5 % fs |
| Resolution | 0.01 bar |
| Probe connection | 3 x 7/16" – UNF |
| Overload rel. (high pressure) | 65 bar |
| General Technical Data | |
| Weight | 826 g |
| Dimensions | 210 x 121 x 60 mm (LxWxH) |
| Operating Temperature | -20 to +50 °C |
| Protection Class | IP54 |
| Auto-off instrument | 10 min* |
| Battery Life | 250 h with no illumination, no Bluetooth; 100 h with illumination and Bluetooth; |
| Battery Type | 4 x type AA batteries |
| Data Transfer | Bluetooth® |
| Radio range | 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) |
| Storage Temperature | -20 to +60 °C |
| Temperature - NTC | |
| Measuring range | -40 to +150 °C |
| Accuracy | ±1.3 °C (-20 to +85 °C) |
| Resolution | 0.1 °C |
| General Technical Data | |
| Weight | 127.4 g |
| Dimensions | 183 x 90 x 30 mm |
| Operating Temperature | -20 to +50 °C |
| Product-/housing material | Plastic |
| System Requirements | requires iOS 13.0 or newer; requires Android 8.0 or newer; requires mobile end device with Bluetooth 4.0 |
| Product Color | black/orange |
| Battery Type | 3 AAA micro batteries |
| Battery Life | 150 h |
| Data Transfer | Bluetooth® |
| Radio Range | 100 m |
| Refrigerant | A2L / A3 compatible |
| Storage Temperature | -20 to +60 °C |
| Operating Humidity | 0 to 80 %RH |
| Weight | 570 g (incl. batteries) |
| Measuring Range | 0 to 100 kg |
| Accuracy | Operating temperature +22 °C:
≤ ±(10 g+ 0.03 %rdg) (0 to 30 kg)
≤ ±(10 g+ 0.05 %rdg) (30 to 100 kg)
|
| Resolution | 0.01 kg |
| Operating Temperature | -10 to +50 °C |
| Protection Class | IP44 |
| Battery Life | > 70 h at +25 °C |
| Battery Life | 4 x type AA batteries |
| Interface | Bluetooth® 4.2 |
| Radio Range | 30 m |
| Storage Temperature | -10 to +50 °C |
| Operating Humidity | 0 to 80 %RH |
| Operating Temperature | -10 to +50 °C |
| Protection Class | IP54 |
| Product Color | black/orange; silver |
| Maximum Working Pressure | 35 bar |
| Battery Type | 9 V (6LR61) |
| Battery Life | >60 hrs + 3000 valve operations |
| Interface | Bluetooth® 4.2 |
| Radio Range | 50 m |
| Storage Temperature | -10 to +50 °C |
| Weight | 570 g (incl. batteries) |
| Dimensions | 95 x 119 x 47 mm (LxWxH) |
Buy with 100% confidence knowing your purchase is backed by the full Manufacturer's Warranty.
| Color: | Blue, Purple, White |
| Size: | 20, 24 |
| Material: | 100% Polyester |
