Stun gun vs. TASER: Range
Stun guns are close proximity devices that require you to be next to the person attacking you. They use a painful shock to discourage further contact.
On the other hand, a TASER uses projectile prongs that attach to a target further away—up to 15 feet. The two prongs spread out when a TASER gun fires, allowing them to land on different body parts. This helps the TASER send electricity across a larger area. Ironically, a TASER's shape is more like a traditional firearm than a generic stun gun is.
While a TASER device is just as painful as a normal stun gun, it's more effective at incapacitating muscle functions so an attacker can't move.
TASER use by police officers
The projectile prongs on TASERs make them ubiquitous among law enforcement agencies with police TASER devices offering more range than consumer models—up to 35 feet.