4PCS Stem Cap Auto Sensor Indicator

Visually alerts you when the tire pressure is low to help avoid premature tire wear or blowouts from under-inflated tires 

Description:

• Simply install on the air valve 
• According to the recognize color to display the pressure of the tire 
• Fit on any standard size existing tire valve stem 
• Sing it makes the tire of your car more safety
• Easy to control and install
• Tire Pressure:2.0 2.2 2.4Bar
• Size: Approx. 2.3 * 1cm/ 0.91" * 0.39" (L*D)

Normal: under standard tire pressure situations, Transparent window should be a green, Vehicle normal driving.

Warning: The tire pressure is slightly lower than the standard of about 10%, Transparent window should be yellow-green, Promptly inflatable.

Danger: The tire pressure is slightly lower than the standard of about 25%, Transparent window should be yellow-red. Should immediately check, inflatable.