SoTimerSensor(3) on Linux
The text 84bfc15788a8, as Debian 6.0 (Squeeze) shipped it.
The SoTimerSensor class is a sensor which will trigger at given intervals. Use sensors of this class when you want a job repeated at a certain interval, without explicitly needing to reschedule the sensor (i.e. SoTimerSensor automatically re-schedules itself after it has been triggered).