Wireless Dog Fence

100% Waterproof Wireless Dog Fence Receiver Collar  Easy to Setup  Latest & Effective  Level 1-100 sensitivity & Up To 500 Meters Radius How Does It Work? If your dog is beyond the distance that you have set with the transmitter, the receiver collar will start up by a warning tone, then static shock until your dog comes back to “safety zone”.  How Many Dogs Can Be on The Same System? An unlimited number of receivers / collars are supported at same time. Please install the transmitter 4-6 ft. from the ground with no metal wall interference, so as not to interfere with the wireless signal, affecting the remote control distance. DOG CONTAINMENT WIRELESS FENCE COLLAR RECEIVER - Receiver collar with automatic sleep function, lithium battery is 300 mA, standby time of about 24 hours, full of electricity normal use about 8-9 hours. Waterproof and rechargeable collar receiver,the collar fits dogs 8 pounds and up with neck sizes from 6 to 26 inches (Small/Medium/Large/Extra L