Specifications:Name: Wireless Pet FenceType: 1 Dog System, 2 Dog System,3 Dog SystemColor: WhiteTransmitter Size: 14.0 x 8.5 x 3.2CMReceiver Size: 6.5x 3.9x 3.2CMRange: 500mCharger voltage: 110-220vFeatures:The real wireless remote control pet electronic fence.The electric pet fencing system is a one of the most reliable and safest wireless fence.Built-in wire transmitter. With the transmitter as the center, the maximum remote radius of 500 meters.Adjustable signal strength by 0-100 file, the transmitter corresponding receiver distance of 20-500 meters.Transmitter built-in high-capacity rechargeable lithium battery, easy to useReceiver waterproof, rechargeable, economical and durable.Descriptions:When the dog is beyond the range of activities, the receiver will automatically start the training function, and according to the first sound warning, and then electrostatic stimulation to remind the dog back to the "safety zone".A transmitter can support an unlimited number of receivers work at the same time, and do not interfere with each other.Transmitter with LCD display, visual display of the current signal strength stalls.Code is simple to operate, fast function settings.Please read the instructions before use.Package Included:1 x Transmitter (Built-in rechargeable lithium battery)1/2/3 x Collar Receiver (Built-in rechargeable lithium battery)1/2/3 x Test Light Tool4 x Screws1 x User's Manual（English）1 x Charger1/2/3 x Strap4/8/12 x Metal Probes20 x Flag