I'd be interested to see, long term, what the results are for those sensors vs a calibrated digital gauge. Is that something you'd be willing to do? Check the pressure once in awhile against a known working gauge?Thought I would add my experience. Just installed this TPMS that I purchased from Amazon. Tested it on a all day ride. Seems to work fine. It doesn't turn on until movement. Updates after a block or so as mentioned in previous posts. A 12mm lock nut must be removed before you can remove the cap. For the price, I like it. We'll see how long it lasts.
Mercu Wireless Digital Motorcycle Tire Pressure Gauge Monitoring System, Waterproof TPMS Digital LCD Display,Tire Pressure Gauge Monitoring System 2 Sensors for for Motorcycle https://www.amazon.com/dp/B07BXD2VF2/ref=cm_sw_r_cp_apa_i_KeS-CbV49WWWM