1. There are two versions. One we recommend for use for tyres with 10- 50 psi which is for passenger vehicles and SUVs and will start flashing for a 4 psi pressure drop. The other Version is designed especially with the heavier vehicles in mind and is recommended for pressures from 20 psi to 150 psi. and this version will require a 8 psi drop before it starts flashing

2. The installation of Air Alert Valve Cap will reduce both fuel and tire costs. Having under inflated tires or even only one under inflated tire means that your fuel consumption will be increased. Under inflated tires or only one under inflated tire will mean that the tread of the tire is worn down faster and therefore, your life span on your tires is reduced. Another important factor is that under inflated tires are dangerous and can lead to blow outs therefore, from a safety point of view Air Alert Valve Cap can and may save lives. Research shows that 80% of moving vehicles have one or more tire that has an average 25% loss in pressure. Using these figures given, it means that each vehicle is using an average of 300 USD per year on fuel than it should be with the correct tire pressure on all tires.

3. Air Alert has been designed to make the installation effortless for anyone. Air Alert replaces the valve cap on the tire and will calibrate with the correct tire pressure and will also fit any tire. The cap will fit any vehicle such as cars, trucks, motorcycles, motor homes and much more.

4. Air Alert is a five minute installation process. Ensure that your tires are set to the correct tire pressure as per your vehicle's owners manual. Replace the current dust cap on your valve stem with the Air Alert Valve Cap. A slight hissing noise may occur and then Air Alert will calibrate with the correct pressure of the tire. Air Alert is now installed and as soon as the tire pressure drops 4 psi (8 psi for truck version) a red light will flash on the device which will indicate that you need to attend to the pressure of the tire.

5.Air Alert is developed for all different types and makes of vehicles. There are two types. One is developed for the passenger, SUV vehicles and motor cycles when the other is developed for the heavy duty vehicles which runs higher tire pressures and does not want to be warned for minor pressure changes.

6. The life span of the Air Alert will depend on the usage. In normal conditions, with the cap on stand-by mode with correctly inflated tires, the device will last over 2 years. If the cap indicates loss of pressure on a tire and is continuously flashing the battery will last about 3 weeks in continuous mode. As soon as the tire pressure is corrected and the cap is back to stand-by mode there is not draw from the batteries.
We suggest that from time to time you verify the functionality and the condition of the batteries by just unscrewing the cap. When unscrewed, the cap will flash which indicated everything is in good working order. If the flashing is dim or not flashing, the batteries are worn out. Re attach after check.

7. At the time that Air Alert is put on the tire (with the correct tire pressure), Air Alert calibrates to the exact pressure and is permanently set for life. You can not re-calibrate at a later time. The initial pressure is what sets the calibration. However if you at some point run a higher pressure temporarily due to heat build up or when for example towing a trailer it does not effect the Air Alert. It will always flash 4 psi below what the initial pressure was. Since Air Alert can be set to different pressures (such as for front and back tires, which usually have different setting) it is essential that, when rotating the tires, you switch also the caps.

8. You can check the battery of each Air Alert Valve Cap by unscrewing the device off the tire: the red light on the top will start to flash, thus indicating that the battery is still active.

9. The Design of the Air Alert has to be 100% airtight. The batteries are totally enclosed as part of the design. It would be unsafe to have consumers changing the batteries since we could not guarantee that the units would be airtight after that. Therefore the Air Alert is designed as a totally sealed unit and has to be replaced when the batteries are empty.

10.The Air Alert version without anti-theft can be removed and stolen. However, the device can not be effectively used on to any other tire that does not have the same pressure as when the device was first installed. The new version of Air Alert is equipped with an anti-theft system which prevents from unscrewing the cap without the supplied key. Please see question #13.

11.The housing is made of stainless steel and is resistant to corrosion. The plastic cover is made of clear polycarbonate. The device has no moving parts inside except sensor which monitors the tire pressure. The Air Alert does not interfere with any of the devices on your vehicle like ABS brakes etc. All independent test indicates that the Air Alert is a safe device.

12. The Air Alert is so light in weight that it will not have any significant impact on the wheel balance. However we recommend that when you balance you tires you have the caps on to have the most accurate balancing.

13. The Anti-Theft version has a free turning stainless steel sleeve around the main body. Therefore it is impossible to remove the caps without a tool. There is a special key included in the package which will allow you to easily install or un-install the cap.

14.Underneath the cap are some manufacturing codes as well as the letter F (front) and R (rear). You can use a knife or something sharp to scratch off one of the letters so you know where the cap belongs.