An electronic remote training collar is a device that applies electric current to a dog's neck to give them a signal. It is wireless, powered by batteries, and usually comes with a transmitter that sends a signal to the collar. This shock the collar applies is intended to give the dog a mild stimulus, similar to what you experience when you receive a static shock. When given while the dog is doing undesirable behaviors, the shock is meant to deter the activity in the future. Electronic remote training collars allow you to train your dog with positive punishment from a distance and give you the ability to train your dog even when it can't actually see or hear your commands.