Has anyone here actually tested the long-term reliability of those new “smart” AC recharge kits with built-in pressure sensors and app connectivity? I’ve seen the ads touting them as a DIY miracle for R-134a systems, but I’m skeptical-they claim to prevent overcharging and detect leaks without tools, yet I haven’t found any independent reviews beyond manufacturer fluff. In my 15 years wrenching on Hondas and Toyotas, I’ve stuck to manual gauges and UV dye because electronic gadgets often fail under heat or vibration. What’s your take? Got data or real-world failures to share that could sway me, or am I just old-school stubborn? Let’s hear from techs who’ve retrofitted these on fleet vehicles-evidence over hype, folks.