A defensive device which emmits a tuned, high-powered EM pulse capable of interrupting seretonin-circuitry of all standard-model servomechs within ~10-meter radius. As a result all motor routines temporarily freeze and their functions are disabled.
They are mainly used against malfunctioning servomechs. However they are also used for infiltration, sabotage and other commando-style operations.
Its drawback are its extreme power requirements, necessitating strictly regulations under battlefield conditions, requiring proven need. They are best used along with projectile weapons.