🐶【2024 Upgraded Safe Electric Fence for Dogs】The transmitter, receiver, and boundary wire form an effective fencing system together to deter our dogs from the designated area, which greatly ensures our pet’s safety. If your dog tends to walk out of the boundary, the transmitter will emit a harmless radio signal. Once the signal is detected by the receiver, it will automatically start beep or shock mode to urge your dog to go back into the boundary. 🐶【Comfortable Adjustable Electric Dog Fence】The collar strap with an adjustable neck circumference of 7.5in-17.92in, it's suitable for small, medium, and large dogs weighing 4lbs+. The transmitter comes with a 1.2-acre signal field range and adjustable control range, which allows you to control the width of the boundary by adjusting the knob. The wire break warning can tell you in time if the wire is broken. 🐶【Rechargeable & Waterproof Electric Fence】One transmitter can pair with 3 receivers. These collars can be used for about 10 days. If the red indicator flashes quickly, it means the receiver needs to be charged. In addition, made of durable ABS material and featured with IPX7 waterproof level, our receiver greatly extends its service life, and allows your dog to play in wet grass or rainy weather.