Review on 🌡️ Enhanced Testo 550S Manifold Thermometer: Efficient Testing, Measuring & Inspection by Malik Munns

Essentially a simple hardware upgrade of the old 3 port Testo 550 and 549 manifolds. I don't think they will have as long a battery life as the old probes but they will likely to be expected as you upgrade your screen and processing power but still run at 4x AA. One thing I want to throw away: DO NOT buy them hoping to use refrigerant probes with this manifold; they don't connect. The only sensors that will work with it are the temperature sensors (both air and pipe) and the vacuum sensor. That little tag aside, disappointment aside, this distributor is fantastic at what it does and if I had to buy it again in a heartbeat if I had to.