How To Add or Remove the PetSafe® GPS Cat Tracker From the Collar
The Tracker comes preinstalled on a collar strap. However, the strap is replaceable.

To replace the strap, unclip/push the J-hooks off the side bars on each side of the Tracker, then clip the J-hooks back onto the side bars to attach the new strap.
Gently pull the straps away from the Tracker to ensure it is installed securely.