Dogtra 282C 1/2-Mile Remote Training 2-Dog E-Collar with 127 Stimulation LevelsAdvanced simplicity is what we strived for with the Dogtra 282C e collar, offering all the key essentials for dog training in an ultra compact unit without sacrificing the benefits of a remote training tool. The 282C is the perfect 2 dog e collar system for basic obedience or field training, where you need a reduced size receiver collar for a smaller dog. It is designed for dogs as small as 10 pounds. The 282C e collar is packaged with the smallest