The collar’s audio cue is set off when the GPS receiver perceives the collar to be outside the Nofence boundary. It consists of a scale of tones, starting at a low pitch. The pitch will increase until the animal makes a turn and starts walking back to the Nofence pasture.
The audio cue is switched off as soon as the collar records a position that is one meter prior to where it started. The tone scale takes somewhere between five to 20 seconds to play, depending on the animal’s speed.
The audio cue is designed to be predictable to the animal. If the tone scale is played to the end, the electric pulse is triggered. If the animal continues to walk away from the Nofence boundary, a new audio cue will start sounding two seconds after the previous electric pulse was emitted. If the animal has turned and is heading towards the Nofence pasture again, no audio cue is emitted. A third and final audio cue will start playing if the animal continues heading away from the Nofence boundary. After receiving a third electric pulse the animals is considered escaped and receives no further signals until it has returned into the pasture.
This is how the audio cue sounds.
Other audio signals
In addition to the audio cue, the collar has a start-up sound that is played when the battery is inserted. Further, it can play a locating tone if you need to find a collar that you cannot see.
