User's Manual

TD 93021US Rev A
10 FEB 2014 / Ver A 128
Installation Guide
teleCARE IP
8.2.1 Location Based Wireless Nurse Call Using LF Beacons
The addition of the NILF low frequency beacons gives location based wireless functionality available
including access control. The NILF will send out its ID, including location information, at regular
intervals using a low frequency 125 kHz signal that will be picked up by the wireless transceiver
modules that pass by the NILF.
Figure 175. Location based wireless functionality
The range of an LF beacon is adjustable and can be up to approximately 6.5 feet (2 meters) with
battery power and approximately 10 feet (3 meters) with external power.
When a wireless device comes within range of a passive NILF location beacon it will receive the beacon
ID with the location information. It then stores the location as the last known location. The stored last
known location will be added to the next event that is transmitted from the wireless device, like a
button press, battery low alarm, etc.
When a wireless device comes within range of an active NILF location beacon, it sends a location
update message to the wireless server. In addition, based on the received location information, the
wireless server can check to see if the person carrying the wireless device is allowed to access that
location. Doors can be opened or stay closed depending on the access rights. Automatic alarms can
be generated when a person leaves or enters a certain location.
Whenever a call is made from a wireless module the location will be transmitted to the wireless server,
when the wireless module is not in range of an LF beacon the last two known locations will be
transmitted.