Testo 550s Kit I App Operated Digital Manifold, 2 x testo 115i Pipe Clamp Thermometer, 1 x testo 552i Micron Gauge and a Set of 3 Hoses I for HVAC Systems – with Bluetooth, Black

Manifold is great, but the hoses that come with are better used thrown in the trash

My only complaint is that the suction smart probe doesn’t want to connect. I know there’s videos and posts online about other people having the same problem so it would be nice if they fixed that issue. Even with that issue, I’d still give 5 stars. Other than that, these are top notch! Absolutely comparable to, or in my opinion better than, the field piece gauges that are more expensive. I have the app on my phone so I can move around and do what I need to do while checking pressures thru Bluetooth with a click. If you charge using superheat, I HIGHLY recommend this set up plus the thermohygrometer from testo as well. Also Bluetooth, so you can see your wet bulb reading on the indoor from outside, saves me tons of time going in and out, up and down stairs. These gauges will do all of the calculations for you and makes the job so much easier. The Vacuum sensor not working doesn’t bother me one bit honestly, but it may be an issue for someone else so make sure you register your warranty and contact them, I haven’t yet, but I’ve heard they’re easy to deal with.

I connected two microns gauges to the system when doing vacuum. Gauge that i'm using couple of years and I never had a issue with it, was showing 800 microns and testo probe was showing 1950 micros. I used different vacuum gauge and still testo probe was off over a 1000 microns

Setting up the manifold and it's probes was a walk in the park and start using it without reading any manual very easy a quality product thank you Testo for making my refrigeration job a pleasure

opened it up called for software up grade and have started getting used to the many abilities it has