Original replacement starter relay specifically for Peugeot Speedfight 3 50 2T AC, Vivacity 3 50 2T AC and Kisbee 50 4T scooters. But also fits other models which use a 4-pole relay.
A defective relay is usually the cause when starting despite full vehicle battery the starter does not turn. The relay switches the positive of the battery directly to the starter motor. Often this switching mechanism hangs and the relay must be replaced.