*The Nofence shelter beacon is a Bluetooth unit which disables the collar’s GPS receiver. It should be used inside buildings to prevent animals from receiving wrongful audio cues and electric pulses due to signal deflection. When a collar is within reach of a shelter beacon and is connected to it via bluetooth, this is the symbol you will see in the app. 
Why use shelter beacon?
Environmental factors can cause degraded GPS signals. A roof can interfere with the collar’s ability to receive accurate GPS signals, which may cause the position to drift. If the drifting position is logged outside of the Nofence boundary, the collar may emit audio warnings and electric pulses. This is why we recommend using a shelter beacon if your animals have access to a barn or a shed.
When the collar picks up the signal from the shelter beacon, the operating mode is disabled. Whenever the animal moves out of the shelter beacon’s range, the operating mode comes back on. Be aware that a shelter beacon could make a dent in the Nofence boundary if the reach tangents the boundary.
The reach of a shelter beacon is not exact and can differ depending on physical obstructions. The Bluetooth symbol will appear in the app when the collar has contact with a shelter beacon.
To check the reach of a shelter beacon, you should take a collar in your hand and walk around with it to see when the beacon symbol appears in the app. Beware that the reach can vary depending on several factors, such as the animal’s body facing towards or away from the shelter beacon, or any walls obstructing the signal.
In larger rooms, we recommend using several shelter beacons. If the animals often lay down alongside the outside walls of the building, you should also consider placing shelter beacons here. Observe where the animals lay down to rest to estimate where the beacon should be installed.
