The TEK Series 1.5 / 2.0 E-Collar module allows you to add training functionality to your TEK Series 1.5 / 2.0 GPS Location Only system. This DryTek® waterproof module easily connects to your GPS Tracking Collar to allow you to track and train your dog from up to 10 miles away. Choose from continuous, momentary, and rising stimulation, vibration, or tone.