Digital tire temp gauge with memory (maximum temp). Gauge will show real-time temp and allows you to recall max temp after your race. Align and mount the sensor within 24" of tire to monitor for best results. Designed for use with 12 and 16 volt systems. Temp Range 0-300º F. Gauge size is 2.75" wide x 1.375" tall. Sensor size is ." x 3/4". Sensor mounting bracket 1.5 wide. Complete kit includes gauge, sensor, wiring and instructions.