Fence alarms — With the use of gain antennas, the
system could be used for border or perimeter guarding,
and ranges of several kilometers could be achieved to
guard areas, along with ‘fill-in’ units on the fence to give
precise locations of intrusion.
Medical alarm in hospitals/care homes — Units could
be attached to ‘out of bed’ alarms for elderly patients,
with display units positioned on walls to show which bed
has been vacated to nursing staff.
Classroom emergency alarm — Could be used in
schools with a display on each node so that teachers
could be alerted if a fellow teacher was being attacked.
Each node would give the location of the alarm.
Light switching — Could be used to turn all lights on in
a car parking area if movement was detected; a simple
circuit could be used to turn off again after a certain time
period. Using expanded mode, up to 400 lights could be
controlled and turned on/off.
• Single input for alarm IN.
• Test mode input.
• Clear alarm input.
• Two outputs: one relay for switching up to 240V
(lights, alarms); second output is a ‘supply volt’ switched
• Mesh network four hop system.
NATIONAL RF, INC.
CUSTOMER PUTS IT IN A MEAT CAN!!
Visit www.NationalRF.com for this
and other Radio Products!
The 75-NS- 3
to 12 MHz
offered as a
MINI HF RADIO
Includes the MDE8051 training board, power
supply, serial cable
Purchase Orders are accepted from Educational Institutions,
US Government and Research Centers
1 888 GO 4 KITS
Visit us at:
flat rate shipping
Continued on page 79
November 2015 25
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