The new TireMinder i10 is a premium color TPMS designed to continually monitor up to 20 tires, while allowing to swap between up to four different vehicles for a total of 40 tires. This TPMS simultaneously displays up to 10 tires at once, automatically swapping between the front (towing) and rear (towed) vehicles. Kit includes: 1 TireMinder i10 Monitor, 4 TireMinder Transmitters, 1 Rhino Signal Booster, 1 Micro USB Cable and DC Adapter, 8 CR1632 Batteries, 4 O-Rings, 4 Anti-Theft Locking Nuts, 1 Locking Wrench with Valve Core Tool, 1 Mounting Bracket, 1 TireMinder i10 Manual, and 1 Warranty Card. 3 Year Warranty.