Wireless Dog Training Collar Boundary Containment System, Dog Boundary Containment System Radius Remote Control Transmitter, 3-Dog System, Wired Transmitter and Wireless receiver

Transmitter with no built-in battery, receiver with built-in battery. When you use, be sure to keep the transmitter powered on and on before use (the indicator light will always show red).The transmitter does not have built-in battery, not rechargeable. When using, please plug it in.  This pet shock collar electric fence can help to keep your pet in certain area The wireless pet electric fence allows you to set up the transmitting signal level, from 1 to 100 This wireless dog fence system will customize a cordlessradial shaped bounday with adjustable levels from 82Ft to 1640Ft in radius The pet electric fence supports controlling multiple system at the same time via one transmitter The pet electric fence system features a shock collar, which can make beep tone alert and progressive static shock