The product has passed Fcc certification. Using the latest technology, and the receiver will not electric shock the dog after the host is turned off.
With strong signal penetration capability, the host can be placed anywhere in the home. The signal is transmitted around the transmitter, and the dog can receive the signal from any position. The house is too big, you can use two transmitters at the same time, put them in different corners, so that the signal transmission distance is increased.
The signal transmission distance is long. the signal transmission distance can reach 1,000 feet.