Real electronic fence. When the dog goes beyond the set range of activity, the receiver will automatically activate the training function, first give off warning sound, or then a punishment of electrostatic stimulation to remind the dog to return to the safe area.Features- Color: As shown.- Material: ABS.- Packing Size: About 25 x 20 x 10 cm.-Voltage: 220 V- Large distance. With the transmitter as the center, the maximum radius is .-The strength of the transmitter is adjustable from 0-100, and the corresponding receiver distance is 20-500 meters- Receiver waterproof, rechargeable, and durableA transmitter can support a large number of receivers working simultaneously, without with each other- Transmitter with digital display, of the strength- Simple operation, quick function settingPackage list: 1 x Set Pet Electronic Fence Accessories