2 Different Ways to Control 3 Dogs To control 3 Dogs at the same time Please pair 3 Receivers on the same Channel of the Remote Control.Using this pairing way, you will be able to control 3 Dogs at the same time, the receivers will receive the signals (Beep, Vibration, Shock) at the same time. To Control 3 Dogs Separately Please pair different receivers on different Channels of the Remote Control.Using this pairing way, when you control different dogs, you need to switch between different channels.

Dog Collar with 4 Training Modes, Adjustable Levels 1.Vibration "Level 1-100" 2.Shock "Level 1-100" 3.Beep "Default" 4.Auto Mode "Sensitivity Level 1-5"

Q:Here's how to turn on or off the Auto Mode A:Press and hold the power button of the remote control for about 3 seconds, when you hear a "beep" sound from the receiver, the Auto Mode is turned on. Press again for 3 seconds, you will hear the receiver beep twice, and the Auto Mode will be turned off.