1This solar powered monitor, has a micro USB charging port to fit for no-sunlight weather. You can use it even in dark situation. 2 IP67 waterproof sensors, no worry about rainy days and even bad weather. 3Adopts wireless external sensor technology, and support PSI/BAR pressure unit and Celsius/Fahrenheit degree temperature unit, providing you with much convenience. 4LCD screen can display monitored pressure and temperature of 4 tires real-timely. 5Simple installation, universally fits for most car, vehicles, SUVs, etc.Features: This solar powered monitor, has a micro USB charging port to fit for no-sunlight weather. You can use it even in dark situation.IP67 waterproof sensors, no worry about rainy days and even bad weather.Adopts wireless external sensor technology, and support PSI/BAR pressure unit and Celsius/Fahrenheit degree temperature unit, providing you with much convenience.LCD screen can display monitored pressure and temperature of 4 tires real-timely.Simple installation, universally fits for most car, vehicles, SUVs, etc.With tire leaking warning function. There is beep warning for abnormal tire pressure and temperature, creating a safer environment.Specification: Condition: Brand new Material: ABS plastic Color: Black Function: Tire pressure monitoring Operating Voltage: 3.7 - 5 v Storage Temperature: -30 - 90Working Temperature: -30 - 85RF Emission Frequency: 433.92MH50KHz RF Signal Sensitivity: -90dbm Display Mode: LCD color display Bright Screen Current: 6mA Black Screen Current: 4mA Package List: 1 x Solar Digital Display Monitoring System 4 x External Sensors 4 x Nuts 1 x Wrench 1 x Mounting Bracket 1 x Screw 2 x Patch 1 x Instruction Manual