Review on 🚗 Enhance Vehicle Safety with CARCHET TPMS Tire Pressure Monitoring System + 4 External Sensors & Cigarette Lighter by Scott Kalinowski

I have owned this system for 2 years. It was reliable and I appreciate the real-time tire pressure monitoring. However, there is one downside that you should be aware of. Reference or baseline pressure reading is not PSI (maybe it's Pascal?). Regardless of which scale is used, it determines the pressure on that scale and then converts it to the nearest PSI number. Because the original measurement is less detailed than PSI integer values, it must generate significant internal rounding up or down when converted to PSI. As a result, some PSI numbers are never displayed (this behavior has been confirmed by technical support). Among the missing numbers is 30 PSI. It shows 29 and 31 but never 30. This annoys me a little because my target tire pressure is 30psi. There are other PSI numbers that are also skipped. If you can live with that limitation, it's a decent system.