<p>Using the Dogtra® SOUNDBOX2 Remote Dog Trainer, instructors can easily demonstrate to students when and how much stimulation to apply to their dogs. Simply pair a compatible Dogtra handheld transmitter (not included) with the SOUNDBOX2. Once paired, the SOUNDBOX2 will make a beeping sound when stimulation is applied and held down, becoming louder or quieter as the stimulation level goes up or down. Now as different scenarios arise, students will be able to learn from an experienced dog trainer the level and duration of stimulation needed to best suit the situation. Dogtra SOUNDBOX2 Remote Dog Trainer has 400-yd. audible range and auxiliary port for external audio. 3-color LED indicator light. Compatible with iQ PLUS, 200C/202C, 280C/282C, ARC, ARC Handsfree, ARC Wetlands, 1900S/1902S, 1900S Handsfree, 1900S Wetlands, 1900S Black Edition, EDGE, and EDGE RT.</p> <ul> <li>Demonstrates when and how much stimulation to apply</li> <li>Pairs with compatible Dogtra handheld transmitter</li> <li>Beeps when stimulation is applied</li> <li>Becomes louder or quieter as the stimulation goes up or down</li> </ul>