Warning Zone Width: watch this video featuring products available on petco.com.
The warning zone width is adjustable using the system settings menu in the BPU. The warning zone width default settings is average-- approximately three feet warning distance. The minimum setting is one-foot warning distance. The max setting is five feet warning distance. The receiver collar generates three separate tones to assist you in determining the receiver activation status. The low-frequency tone indicates a warning, the mid-frequency tone indicates anti-linger, and the high-frequency tone indicates run-through static correction. Make sure your collar does not tone in the area where your pet should be free to play. If you have difficulty hearing the tones, the lights on the receiver collar will indicate the status. Fast pulsating green indicates warning, fast pulsating red indicates anti-linger static correction and run-through static correction. The flags are the visual tool for your dog to learn the boundary area. After you have trained your pet, you will gradually remove the flags after the pet monitoring phase of the training. After about 15 seconds of anti-linger or normal static correction, the receiver collar will enter a timeout condition. And you must allow for a full 10 seconds recovery time and be backed inside the pet area before the receiver collar will again respond to the boundary. If the receiver collar fails to detect the boundary, then timeout is likely the cause. Wait 10 seconds and try again. When testing the boundary, the receiver collar will skip the warning tone and go straight to anti-linger tone unless the receiver collar has been back in the pet area for a full 10 seconds since the last instance of anti-linger or static correction toning.