Four internal sensor system (Solar) for commercial vehicles / SUV’s / 4×4’s. DIY Installation. Using solar charging technology – energy saving. Innovation technology, super long standby time. Easily transferable from one vehicle / trailer to another. All sensors can be securely locked into tyre valve. Mute warning mode available. Pressure reading accuracy ±0.1 Bar. Ultra-low tyre pressure monitoring. Adjustable threshold value of tyre pressure & temperature. Operating distance up to 16m. Pressure range 0 – 3.5 bar.