What is a TASER and how does it work?
A taser is a battery-powered, handheld device which delivers a short, low-energy electrical pulse. Two electrode wires are attached to the gun's electrical circuit. Pulling the trigger breaks open a compressed gas cartridge inside the gun and flings the electrodes into contact with a body and a charge flows into the muscles.
The taser delivers 19 short pulses per second over 5 seconds, with an average current of 2 milliamps, according to TASER manufacturer Axon. It creates an electric field, which stimulates nerve cells called alpha motor neurons to send an electrical impulse. The impulse travels to muscles and causes short, sustained muscle contractions.
The taser has two modes: the first, pulse mode, causes neuromuscular incapacitation as the neural signals that control muscles become uncoordinated, and muscles contract at random. The second mode, drive-stun, uses pain to get compliance.
The most commonly used device is the TASER X26, according to Axon.