This E-Collar module allows you to add training functionality to your existing TEK Series 1. GPS Tracking System Collars. This module easily connects to your GPS Tracking Collar to allow you to track and train your dog up to 7 miles! Correction capabilities include continuous, momentary and rising stimulation, vibration, and tone. This module is compatible with TEK Series 1. systems tracking collars. Comes with an E-Collar Module, Operating Manual, Guide & DVD, Test Light, and Allen Wrench.