The TASER® Electronic Control Devices are a non-lethal, self-defense alternative that is almost 100% effective. It combines the injury reducing benefits of traditional stun technology with a quantum leap in stopping power via new Electro-Muscular Disruption (EMD) technology. In police studies, TASER® electronic control devices have a higher instant incapacitation rate than a 9 mm hand gun.
The TASER® control devices use replaceable cartridges, containing compressed nitrogen, to deploy two small probes. Attached to the main unit by insulated conductive wires with a maximum length of 15 feet. 50,000 volts travels over the wires and overrides the central nervous system providing incredible take down power. The energy can penetrate up to two cumulative inches of clothing.
These devices can stop a threat up to 15 feet away, allowing you a safe distance to protect yourself and your family from an attacker. If a close quarter defense is warranted, TASER® devices double as contact stun devices to repel someone as a powerful and unexpected backup capability.  
Cartridges for a TASER® devices each have a unique serial number and are equipped with an Anti-Felon Identification system, which discharges 20-30 serialized paper tags when deployed. Law enforcement can later retrieve this confetti from the scene and contact TASER International to get the name of the owner of the device, allowing police to track any potential misuse. Lifetime Replacement Guarantee.