To pair a collar with an Garmin Astro 430 please follow these steps
  1. Start with the collar turned off.
  2. Go to main menu and select "Dog List"
  1. Select "Add Dog"
  1. The device will ask you if you are near the collar, if you are near the collar select yes.
  1. Press and hold down the power button on the collar until the collar beeps twice in a row, the collar should now link up to the device.
  2. The unit will now ask you to name the collar, when this is done your collar will be added to the device.

Purchase a Garmin Astro 430 with T5 Collar