Review on 📱 Testo 557s Kit: App Operated Digital Manifold with Bluetooth for HVAC Systems by Garry Ortiz

All hoses failed within 30 days. They have plastic seals on them. It sucks when you work nights and 2 of your hoses break. Customer support was useless. Hours of waiting and switching between Revain and the manufacturer got me nowhere. That's the 90-day guarantee for you. The micrometer sensor does not work very well. This can help with diagnosis, but not with a vacuum. Constant updates. Literally every time I issue this (almost daily) there is a device or phone app update that takes forever and completely resets the system. So you should just bypass it if you don't want to spend an extra 2 hours on a hot roof. They have jobs related to technology.