The Pulse Train Generator node, for every rising edge of the Input connector signal, generates a train of pulses on the Output connector with the ON time specified by the Factor for ON property and the OFF time specified by the Factor for OFF property. The number of sequential pulses to generate is determined by the Pulse number property.
When the value of the Reset connector is 1, the node immediately sends 0 to the Output connector.

 Behaviour of Pulse Train Generator

Behaviour of Pulse Train Generator with Pulse Number = 2