A Stun Gun is hand-held, electrical, battery-powered (usually 9-volt) self-defense device that puts out a high voltage, low amperage shock.
The effect on the attacker is not from the high voltage, but from the low amperage – one amp will kill a person, but most stun guns have between 1-8 milliamps – just enough to stop an attacker without doing any permanent damage.
Most models have two pairs of prongs, an inner and outer pair. The outer pair are what actually shock the attacker. Pulling the trigger will cause current to leap across the inner pair which causes a visible spark and crackling noise which may be enough to scare an attacker away.
Touching an attacker with the (outer) prongs while pulling the trigger causes a strong electrical current to go through the attackers clothes into his body.
The shock causes intense pain and complete loss of muscle control. Most attackers will be immobilized for 5-15 minutes or longer, depending on how long they were stunned.
If the attacker touches you, the current won’t pass on to you and you won’t be shocked.
The stun gun works by affecting the muscular and nervous systems. It dumps a lot of energy into the muscles causing the attacker to loose energy, becoming difficult to move, disoriented, losing his balance and in a passive and confused state.
The effect increases from a 1/4 second stun causing intense pain and muscle contraction to a one to two second stun causing intense pain, muscle spasms, and a confused mental state which may drop the attacker to the ground.
Usually any charge over 2-3 seconds will cause the attacker to fall to the ground and be unable to recover for several minutes. The effects can last up to fifteen minutes.
Stun Guns have had mixed results against substance abusers.
Remember to check your local laws before buying or using Stun Guns. Their sale and use is restricted in several US States and in several countries.