Build a customized remote training system to get the best performance from your dog with the SportDOG Brand®YardTrainer 105. The proven system offers you a safe, effective tool to reinforce commands and correct misbehavior from up to 100 yards away. The Remote Transmitter sends a signal, activating the Collar Receiver to deliver a harmless stimulation. With proper training, your dog will quickly learn to associate each signal with your command. Adjustable static stimulation levels let you tailor the stimulation to match your dog's temperament, eliminating the risk of over-correction.