How can this unit provide an evacuation function but the unit does not accurately measure microns and requires a separate micron gauge?

You need a separate micron gauge

Is the warranty valid outside the US?

I don't know I would think so you would have to ship it back to were you bought it .

Do the games measure microns? or is the separate probe a must?

It will measure microns internally though the hoses. The probs only measure line temps. I have the wireless versions and the kit comes with the micron sensor

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550s Kit I App Operated Digital Manifold Set, 2 x testo 115i Pipe Clamp Thermometer, 1 x testo 552i Micron Vacuum Gauge I for HVAC Systems – with Bluetooth

Product ID: 353771528

Details

Brand
Testo
Item dimensions L x W x H
21.1 x 12.2 x
Item weight
1 Pounds
Manufacturer
Testo SE & Co.
Material
Plastic

📱Bluetooth app control

🧊Micron vacuum gauge precision

🌡️Dual pipe clamp thermometers

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₩2169260

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Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔧 Elevate your HVAC game with smart precision and remote control!

DEEP VACUUM ACCURACY - Micron vacuum gauge delivers single-digit micron resolution for perfect evacuation verification.
USER FRIENDLY RUGGED DESIGN - Backlit display, IP42 protection, and intuitive menu make fieldwork effortless and reliable.
SEAMLESS BLUETOOTH INTEGRATION - Control and document HVAC tasks remotely via smartphone app for ultimate efficiency.
PRECISION TEMPERATURE PRESSURE - Accurate measurements from -58°F to 302°F and pressure range up to 870 psi ensure flawless diagnostics.
COMPREHENSIVE REFRIGERANT PROFILES - Supports over 60 refrigerants with superheat and subcooling calculations to cover every HVAC scenario.

The Testo 550s Kit is a professional-grade, app-operated digital manifold set designed for HVAC technicians. Featuring Bluetooth connectivity, dual testo 115i pipe clamp thermometers, and a testo 552i micron vacuum gauge, it offers precise pressure, temperature, and vacuum measurements. Its rugged, IP42-rated housing and intuitive interface streamline installation and maintenance of air conditioning, refrigeration, and heat pump systems, while the smart app enables remote operation and real-time documentation, saving time and boosting productivity on every job.

Specifications

ASIN	B08TY6R4FT
Brand Name	Testo
Customer Reviews	4.3 4.3 out of 5 stars (67)
Included Components	Inst., Temp Probes (2x), Vacuum Gauge, Manual, Batteries, Case
Item Dimensions	21.1 x 12.2 x 6.1 centimeters
Item Weight	454 g
Manufacturer	Testo SE & Co. KGaA
Material Type	Plastic

Reviews

J**É

Robusto, amigable y exelente calidad

29.12.2025

I**N

El precio no fue lo que publicó

15.03.2024

J**Z

This tool is easy to navigate and has a lot different options for refrigerants

20.03.2026

O**W

Awesome gauges. I can sit in the truck over 100 feet away and watch the gauge’s work over Bluetooth on my phone.

27.08.2025

M**S

They have fast shipping it came as described. We’ll buy again.

20.08.2025

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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