DT Systems Dog Training Collars offer you with more corrective options than most of our other brands do. With the majority of DT Systems dog training collars you can make use of an addition form of stimulation such as a beeper or vibration as these are useful alternatives to the standard stimulation used in virtually all training collars. With so many options available we’re sure you’ll find a device that will meet your needs regardless of the type of training you’ll be pursuing. DT Systems Dog Training Collars: Simple. Effective. Long Lasting.