Is the audible warning a time delay or distance delay?
The R7 and R8 collars work on both a time and distance delay. This means that the system will give about two feet of audible warning before the dog gets a correction. This gives your dog a chance to retreat into the yard before actually getting a correction. However, if your dog is willing to challenge frequently by attempting to just stand in the audible warning zone, your system will give a correction after approximately 10 seconds of audible warning. This time delay extends the battery life while teaching a persistent dog to respect the system.