The Ultralight Receiver is the world's smallest receiver weighing only 1.5 ounces and measures 2 1/8 x 3/4 x 3/4 inches. It uses (2) 3-volt batteries (included with every receiver) with an average battery life of 7 months. We recommend the Ultralight Receiver for cats or dogs over 8 pounds that are easy or average to train. This unit is not for stubborn breeds!

The Ultralight Receiver is compatible with: Standard Radio Fence System Deluxe Radio Fence System Radio Fence Plus System Indoor Radio Fence System