oGo is a punching start interval timer for orienteering. It workslike a set of traffic lights. Green: A runner may start when theircourse is showing a green “runner”. Red: As a competitor starts thestarter presses the course’s start button and the “runner” figurechanges to a red “standing” figure. The next competitor must waitas oGo counts down to the next start. Amber: Four seconds beforethe countdown ends the “standing” figure changes to an amber“get-ready” figure and a “beep-beep…” alert starts. Green: When thecountdown reaches zero the green “runner” returns and the nextcompetitor may start immediately or any time after that. Eachcourse may be configured with its own name, start interval andstart button colour. oGo can time starts for up to eight coursesper event and store configurations for four events. oGo also keepsa count of the number of starts.