STEELMATE DIY TP-V2 Professional Trailer TPMS 6 External Sensors Wireless Anti-theft Model Tire Pressure Monitoring System DIY Anti-theft 6 External Sensors TPMS Special for TRAILERS All at a Glance Large LCD Display Design - No Repeater Requied Built to Last Sturdy Structure with Long Battery Life, Convertible Pressure & Temperature Unit To Show Operating Distance up to 16m (Refer to attention) Fitting Tire Pressure Range : 2.9~5.2 Bar / 42~75 Psi