The new tireminder trailer tpms is designed for dual or single axle trailers, 25ft or less, running 70 psi or less. The tireminder trailer tpms features a 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.Features: Highly efficient monocrystalline solar panel with lithium iron phosphate (lifepo 4) backup battery. 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 cr1632 batteries. Micro, usb charge cable included. Includes tireminder signal booster for maximum distance and reliability. mounted, solar powered monitor 4 tireminder transmitters (only compatible with this system) 1 hard, wired signal booster 8 cr1632 batteries 4 anti, theft locking nuts with locking wrench (locking wrench includes valve core tool) 1 4ft micro..