Tire Pressure Monitoring System 4 Flow Thru Sensors 0-188PSI 4.3 Color Screen up to 43 Tires RV TPMS with 6 Alerts Monitor for Trailer/Truck/Camper/5th Wheel, Signal Booster/No Removal Inflation. NLNE Tire Pressure Monitoring System 4 Flow Thru Sensors 0-188PSI 4.3color screen up to 43 tires RV TPMS with 6 Alerts Monitor for TireTrailer/Truck/Camper/5th Wheel, Signal Booster/No Removal Inflation. What’s in the box.