PetSafe Additional training aid collar for dogs

The PetSafe® Add-A-Dog® add-on receiver collar and the PetSafe® Add-A-Dog® Lite add-on receiver collar can be used to add a second collar to an existing PetSafe® training aid or to replace an existing collar. The standard PetSafe® Add-A-Dog® receiver collar will work with standard 300-meter, 600-meter and 900-meter training systems. It's perfect for most dogs and provides safe, effective stimulation to get your dog's attention. The PetSafe® Add-A-Dog® LITE extra receiver collar works with the 300-meter and 600-meter LITE training systems. It is specifically designed for dogs with sensitive or shy personalities. Stimulation levels are very light even at the highest levels.