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- testo 550i Bluetooth Smart Block Kit
0564 5550 01
testo 550i Bluetooth Smart Block Kit - App-Controlled System with Built-In 2-Way Valve with wireless clamp temperature probes (NTC) and wireless thermohygrometers
0564 5550 01
testo 550i Bluetooth Smart Block Kit - App-Controlled System with Built-In 2-Way Valve with wireless clamp temperature probes (NTC) and wireless thermohygrometers
Transform your smartphone or tablet into your most powerful diagnostic tool with the testo 550i BluetoothSmart Block Kit. Designed for modern HVAC technicians, this screenless, Bluetooth-enabled smart probe features a built-in 2-way valve block and sturdy hook, as well as (2) testo 115i Smart temperature clamps and (2) testo 605i Thermohygrometers, delivering extensive measurement capabilities in an exceptionally compact kit.
Ditch the bulky equipment and carry out your everyday service, maintenance, and diagnostics on refrigeration systems, air conditioning units, and heat pumps completely wirelessly. With the testo 550i, you get industry-leading accuracy and reliability, all controlled seamlessly through the testo Smart App.
Ditch the bulky equipment and carry out your everyday service, maintenance, and diagnostics on refrigeration systems, air conditioning units, and heat pumps completely wirelessly. With the testo 550i, you get industry-leading accuracy and reliability, all controlled seamlessly through the testo Smart App.
- 100% App-Controlled Efficiency: Manage all your workflow activities—from real-time measurements to instant reporting and documentation—directly on your mobile device using the testo Smart App.
- Ultra-Compact, Screenless Design: Maximize your mobility with the most compact wireless smart probe system on the market. Its screenless design ensures a smaller footprint without sacrificing diagnostic power.
- Jobsite Tough (IP54 Rated): Experience maximum reliability in the field. The extremely rugged housing boasts an IP54 protection class, built to withstand water, dust, and the toughest HVAC environments.
- A2L Refrigerant Compliant: Future-proof your toolkit. The testo 550i is fully A2L compliant, allowing you to safely and confidently service next-generation, low-GWP refrigeration and AC systems.
- Expandable Smart Probe Ecosystem: Need more data? Seamlessly expand your wireless setup by connecting additional optional testo Smart Probes for precise temperature, humidity, and vacuum measurements.
Pressure measurement
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
General technical data | Weight 20.99 oz. / 595 g |
|---|---|
Dimensions 3.03 x 4.29 x 2.48 in. / 77 x 109 x 63 mm | |
Operating temperature 14° to 122 °F / -10 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 130 h | |
Battery type 3 x AAA | |
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
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
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 | |
Absolute Pressure
Absolute Pressure | Measuring range 0 to 0.39 psi / / 0 to 26.66 mbar / 0 to 20000 micron |
|---|---|
Accuracy ±10 micron + 10 % of mv (100 to 1000 micron) | |
Resolution 100 micron (2000 to 5000 micron) / 1 micron (0 to 1000 micron) / 10 micron (1000 to 2000 micron) / | |
Overload absolute: 87.0 psi / 87 psi / absolute: 6.0 bar / 87 psi (relative: 72.5 psi / 72 psi) / (relative: 5.0 bar / 72 psi) | |
General technical data
General technical data | Weight 5 oz. / 142 g |
|---|---|
Dimensions 6 x 1 x 1 in. (LxWxH) / 150 x 32 x 31 mm (LxWxH) | |
Operating temperature 14.0° to 122.0 °F / -10 to +50 °C | |
Protection class IP54 | |
System requirements requires iOS 12.0 or newer; requires Android 6.0 or newer; requires mobile end device with Bluetooth 4.2 | |
Product colour black/orange | |
Auto-off 10 min* | |
Battery type 3 x AAA | |
Battery life 39 h | |
Connection 7/16“ UNF | |
Interface Bluetooth® 4.2 | |
Storage temperature -4.0° to 122.0 °F / -20 to +50 °C | |
| * when not connected via Bluetooth | |
Temperature - NTC
Temperature - NTC | Measuring range -4° to 140 °F / -20 to +60 °C |
|---|---|
Accuracy ±1.4 °F (-4° to 32 °F) / ±0.8 °C (-20 to 0 °C) ±0.9 °F (32° to 140 °F) / ±0.5 °C (0 to +60 °C) | |
Resolution 0.1 °F / 0.1 °C | |
Humidity - Capacitive
Humidity - Capacitive | Measuring range 0 to 100 %rH |
|---|---|
Accuracy ±5 %rH (< 10 %rH or > 90 %rH) ±3.0 %rH (10 to 35 %rH) (at +77°F) / ±3.0 %RH (10 to 35 %RH) (at +25°C) ±2.0 %rH (35 to 65 %rH) (at +77°F) / ±2.0 %RH (35 to 65 %RH) (at +25°C) ±3.0 %rH (65 to 90 %rH) (at +77°F) / ±3.0 %RH (65 to 90 %RH) (at +25°C) | |
Resolution 0.1 %rH | |
General technical data
General technical data | Weight 3.05 oz. / 86.4 g |
|---|---|
Dimensions 10 x 1 x 1 in. / 243 x 30 x 24 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 | |
Length probe shaft 3.937 in. / 100 mm | |
Storage temperature -4° to 140 °F / -20 to +60 °C | |
General technical data
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 |
|---|---|
- testo 550i digital 2-way manifold including batteries (3 x AAA) and calibration protocol
- 2 x testo 115i wireless Bluetooth clamp thermometers
- 2 x testo 605i wireless thermohygrometers
- Transport case
- testo Smart App (free download)
- Instruction manuals
Temperature probes
Sets
Refrigeration systems, air conditioning systems, heat pumps, ductless, single zone, multi zone, mini split systems
- Determination of high and low pressure, automatic determination of condensation and evaporation temperature and calculation of superheating/subcooling. All the results can be read simultaneously on one display (in conjunction with the appropriate Testo Smart Probes)
- Tightness test: Recording and analysis of the pressure curve
- Automatic calculation of the target superheat (in conjunction with the testo Smart App and the appropriate Testo Smart Probes, e.g. testo 115i and testo 605i)
- Evacuation: Graphic progression display of the measurement with indication of the start and differential value (in conjunction with the appropriate Testo Smart Probe, e.g. testo 552i vacuum probe)
Complying with manufacturer's specifications
Some manufacturers specify exactly what the absolute pressure must be for you to evacuate your air conditioning systems and how long this pressure must be maintained. Compliance with these specifications is simple and easy thanks to the flexible setting of the alarm threshold in the testo 552.
Connect to the testo 570 Digital Manifold
When you connect the testo 552 Digital Vacuum Gauge to the testo 570 Digital Manifold, you can save the testo 552's readings directly on a laptop via the optional EasyKool software. This allows data-logging and/or on-site printing.
Complying with manufacturer's specifications
Some manufacturers specify the desired micron lower limit that must be achieved to evacuate their air conditioning systems and how long this pressure must be maintained. Compliance with these specifications is simple and easy thanks to the flexible setting of the alarm threshold in the testo 552.
Evacuating AC/R systems
The testo 552 Digital Vacuum Gauge is for the evacuation of heat pumps, air conditioning, and refrigeration systems. The innovative testo 552 utilizes a sensor that, unlike the competition, requires no cleaning and is not affected by contamination. Never worry about a dirty sensor causing false readings. Trust your testo 552 to always be accurate.
Refrigeration systems, air conditioning systems, heat pumps
- Evacuation: Graphic progression display of the measurement with indication of the start and differential value
Refrigeration systems, air conditioning systems, heat pumps
- Tightness test: Recording and analysis of the pressure curve
- Determination of high and low pressure, automatic determination of condensation and evaporation temperature and calculation of superheating/subcooling. All results can be read simultaneously on one screen
- Automatic calculation of the target superheat
- Measure vacuum: Graphic progression display of the measurement with indication of the start and differential value
Indoor air quality and comfort level
- Automatic calculation of the dewpoint and wet bulb temperature
Ventilation systems
- Duct measurements: Fully automatic calculation of the volume flow via the app after input of the duct cross-section
- Outlet measurements: Easy parameterization of the outlet (dimensions and geometry), contrast and comparison of volume flows of several outlets when adjusting a ventilation system, continuous and multi-point mean calculation
Conventional heating systems
- Differential pressure measurement: Measurement menu for the pressure-drop test including alerts
- Temperature measurement: Rapid detection of temperature changes via graphic progression display, easy selection of emissivity thanks to stored materials list
