CARCHET Tire Pressure Monitoring System for RV Trailer TPMS Solar Powered With 6 External Sensors MONITOR TIRE PRESSURE DYNAMICALLY - CARCHET Tire Pressure Monitoring System supports visual and audio alarm, prevents puncture and damage of car parts caused by flat tire. Improve fuel efficiency, prolong tire life etc. DISPLAY TIRE PRESSURE AND TEMPERATURE SIMUTANEOUSLY - with repeaters amplifying sensor signal monitoring distance to up to 100 meters. Pressure display range: 0-6Bar / 0-99psi, temperature range: -19 C ~ + 80 C /-2F ~ 176F. Default alarm value is 29-44 PSI and can be customized. SUPPORTING USB CABLE CHARDING AND SOLAR CHARGING - Monitor comes with 1000 mA rechargeable battery. Also the batteries can be easily replaced (one CR1632 battery for each sensor). No risk to destroy your tire, just plug and play. CODED SENSOR AND ANTI-THEFT DESIGN - Comes with 6 sensors, each sensor is controlled by individual chip and will automatically shut down to save battery when the tire stopped running for 10 minutes. Car speed to 20km/h, the sensor will wake up and update data. (search B01G8LXS26 if you need a replacement sensor). AFTERSALES SERVICE AVAILABLE - Please email seller if you have any question in installing and using the TPMS.