The Dogtra EDGE RT is a high output unit with a 1-mile range. This model works a bit differently than the typical Dogtra remote training collar and is a combination boost control unit that allows you to rapidly change stimulation levels with the buttons on the transmitter. This model is expandable up to 3 dogs and recommended for tougher, higher drive pet dogs, gun dogs and K-9 service dogs over 35 pounds. In this Dogtra EDGE RT review, i’ll run over the features and functions of this remote dog training collar to give you a better idea if this is the model for you.