MyChronTom
The MyChron5/2T is a data logging system that allows you to connect a variety of sensors to it, including RPM, an IR lap receiver (not included), and a temperature sensor (or two on the 2T version).
The MyChron5 has an inductive RPM input, a temperature input (for exhaust gas, cylinder head, or water temperature sensors), a CAN expansion input, Wi-Fi for downloading and transmitting, alarm LED lights, a shift light array, integrated GPS (10Hz sampling frequency) for lap timing, speed, track mapping and driven-line plotting, and an integrated three axis accelerometer/gyro for calculating acceleration.