Tiremoni tpms tm 100 tyre pressure monitoring system 4 sensors measurement range up to 60 psi adjustable warning thresholds ideally suited for cars or trailers with 4 wheels and maximum cold inflation pressure of 50 psi allow 20 pressure increase due to tyres warming uptiremoni tm 100 permanently shows all 4 tyre pressuresthis gives you the information which makes sure that you are driving with optimum tyre pressure at all times