EEZTire-TPMS Real Time/24x7 Tire Pressure Monitoring System (TPMS4B) - 4 Anti-Theft Sensors + Booster, incl. 3-Year Warranty REAL TIME/24x7 SAFETY & HIGH FUEL ECONOMY - EezTire TPMS system by EEZ RV Products is the industry leader in the RV TPMS market since 2005. It accurately monitors tire pressure and temperature for up to 26 tires and handle tire pressure up to 210 psi. EezTire TPMS system gives you PEACE OF MIND 24 x 7 when you are on the road or off the road. Maintaining proper tire pressure at all times ensures vehicle safety and helps achieve desired fuel economy. ADVANCED TECHNOLOGY ALERT SYSTEM - the monitor is motion sensitive and monitors tire pressure and temperature on 6-second intervals continuously. It sends visual and audio warning alarms immediately when tire pressure or temperature falls outside the preset safety parameters. The monitor goes into power saving mode if no motion is detected in 15 minutes to save battery. The sensors send status signals to the monitor on 6-second intervals continuously as long as the sensors are under pressure. EASY OPERATION & MAINTENANCE - EezTire TPMS monitor has one of the largest display screen on the market 4  x 3. It takes minutes to setup and program. The monitor has a built-in rechargeable internal lithium battery that lasts up to 60 hours on a charge. Sensors have replaceable batteries. It comes with a common USB charging cord that can be connected to vehicles cigarette lighter or USB port. MULTIPURPOSE - TPMS monitor has separate controls for RV and trailer sensors which allows owner to turn off trailer control when driving RV only. The monitor can be programmed with anti-theft sensors or flow-through sensors or different combinations of both sensors to meet the needs of different tires. A booster can be added to boost signal and overcome distance and electromagnetic interference challenges. A basic TPMS system starts with 4 sensors (TPMS4) and could go up to 26 sensors (TPMS26) 3-YEAR LIMITED PRODUCT WARRANTY - EEZ RV Products offers a 3-year limited product warranty for all of our TPMS systems. We also provide technical and customer support when you have any questions or need help.