2 Different Ways to Control 2 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.