This Extra Collar Receiver is compatible with the Contain ‘N’ Train in-ground fencing system (SD-3000). This water resistant collar has an adjustable nylon strap. The Contain ‘N’ Train system works with an in-ground wire fence and by remote control.
The in-ground fence will transmit early warning tones to alert your pet he is about to be corrected. The correction will get stronger as your pet approaches the boundary. The Contain ‘N’ Train collar has a replaceable battery.