An electroshock weapon is an incapacitating weapon. It delivers an electric shock aimed at temporarily disrupting muscle functions and/or inflicting pain without causing significant injury.
Many types of these devices exist. Stun guns, batons (or prods), and belts administer an electric shock by direct contact, whereas Tasers (conducted electrical weapons) fire projectiles that administer the shock through thin flexible wires. Long-range electroshock projectiles, which can be fired from ordinary shotguns and do not need the wires, have also been developed.
Though the two terms are often used interchangeably, stun guns are actually direct contact weapons that work mainly through pain compliance by affecting the sensory nervous system. It can also cause some muscular disruption, but that generally requires 3-5 seconds of direct contact. In comparison, the Taser is a long range weapon that incapacitates the target by disrupting voluntary muscular control through the motor nervous system.