SPORTident has created great timing kits for Enduro races. There are three options - one each for a 4 stage race, a 5 stage race, and a 6 stage race. These kits contain everything you need for world class competitive timing. Between the SIAC chips that the competitors carry with them and the BS11 control stations at the start and finish of each stage, competitors' times are recorded without needing to slow down at the finish line.
This device is useful to determine the signal strength at a given distance. It is used like a SIAC finger stick, but indicates the signal strength by the number of beeps it emits when within range - a good signal emits 3 beeps at a time, an average signal 2 beeps, and a weak signal is 1 beep.