The new TireMinder Trailer TPMS is TireMinder's newest Tire Pressure Monitoring System, designed specifically for dual or single axle trailers running 70 PSI or less. System features highly efficient monocrystalline solar panel, long lasting lithium iron phosphate (LiFePO 4) battery, crystal clear color LCD display which simultaneously displays both pressure and temperature reading for all tires, windshield-mountable monitor with included 3M strips, light-weight, 0.3 ounce transmitters, and TireMinder Hard-Wired Signal Booster for maximum distance and reliability. Highlights: Highly efficient monocrystalline solar panel with Lithium Iron Phosphate (LiFePO 4) backup battery, making this system truly wireless. Crystal clear LCD color display which simultaneously displays both pressure and temperature reading for all tires. Monitors up to 4 tires from 0 to 70 PSI. Designed for trailers 25FT or less. Windshield-mountable with included 3M strips. Features Next Generation TireMinder Transmitters, weighing only 0.3 ounces ( only compatible with this system ). Transmitters feature replaceable batteries. Micro-USB charge cable included. Includes TireMinder Signal Booster for maximum distance and reliability.