If the dog exceeds the specified activity range, the receiver will start the training function and prompt the dog to return to the safe zone with a warning sound and an electric shock. Features: Automatic Dog Training: When your dog tries to cross the border, the electronic fence will beep and vibrate. Wireless remote-controlled electronic fence: remote control. With the transmitter in the center, the remote control has a maximum radius of 500 meters. Adjustable: The signal strength of the transmitter can be adjusted from 0 to 100 levels. The receiver is waterproof, rechargeable, economical and durable. Digital Display: The transmitter uses a digital display to visually indicate the current signal speed. Features: Product name: Wireless dog fence Main materials: ABS and electronic materials Slope: 0 -100 adjustable The maximum radius of the remote control: 500 meters European regulations Notes: * Please mount the transmitter 1.5m from the ground without any metal wall, so as not