Invisible Dog Fence Wireless Boundary Containment System

2 In 1 Wirelless Fence & Remote Training Collar Mode 1: Wireless Dog Fence Set a range on the transmitter,then put the receiver collar on dog’s neck. When dogs are within the setting range, the collar will not work. When dogs are out of the setting range, the collar will work the warning cycle. The collar will switch to standby mode if it doesn't work for more than 5 minutes Mode 2: Remote Training Collar Under Remote Training Mode, signal symbol stop flashing. You can press the CH (channel button) to choose which dog will you train. One transmitter can control up to 3 dogs at the same time. There are 3 functions to train dogs: Vibration, Shock, Sound. Vibration and Shock have 9 levels to adjust.