Chapter 1 – Installation
Page 10 of 30 9450 Duolink Exit Alarm Receiver Hardware Installation Guide
0510-1103-G
To select the frequency:
1. Verify that the unit is set to the right frequency by observing the
position of SW1 and SW2 (one switch determines the proper filtering
and the other switch tunes the antenna). Both must be in the correct
position in order for the DuoLink to operate.
Tamper Switch
(deactivated by the Metal
Mounting Bracket)
SW1 = Tuning SW2 = Filter
2. The unit is set to 66 KHz when both the SW1 and SW2 switches are
positioned towards the antenna coil assembly (right in Figure above).
3. The unit is set to 262 KHz when both the SW1 and SW2 switches are
positioned away from the antenna coil assembly (left in Figure above).
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