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Step 3: WS8920 Repeater Placement Testing (Interference
Detection)
Repeater placement test ensures the WS8920 is located in an area with low noise and
interference and can successfully receive signals from one-way wireless devices.
To perform a Repeater placement test:
1. Press and hold Programming button for 1 second to enter Programming mode. The "Mode
Entered" tone sounds (1 long beep). Repeater placement test is continuously active until
Programming mode is exited, times out after 4 hours or cover is put back on unit.
2. If RF traffic level or noise floor level is too high, the yellow LED lights steadily. If this occurs,
reposition unit until yellow LED turns off.
3. To exit Enroll/Placement mode, press Programming button again for 1 second or place cover
back on WS8920. The "Mode Exited" (3 beeps) tone sounds.
Step 4: Enrolling the WS8920 with the Alarm Panel
The WS8920 has a six-digit electronic serial number (ESN) that must be input to the alarm
panel during enrollment.
To quick enroll the WS8920 (available on selected alarm panels):
1. Enter Wireless Enrollment mode on alarm panel (see panel installation instructions).
2. Tamper WS8920 to transmit ESN.
3. Confirm ESN on alarm panel. Panel prompts for zone number.
4. Select and accept zone number for WS8920 to complete enrollment.
To manually enroll WS8920, consult alarm panel installation manual.
NOTE: For PowerSeries, Alexor, and SCW9045/47, use the serial number beginning with "2." The
serial number beginning with "A" is for future use.
NOTE: Non-alarm zone type 26 is recommended. With this zone type, loss of AC or a low battery
condition are not reported to the central station. The alarm panel does not show a trouble for the zone
but will indicate it as open. Select the Force Arm attribute for this zone. Program a zone label to
identify the WS8920. e.g.,"Rpter 1 Pwr Trbl."
Step 5: Placement Testing the WS8920
For optimal performance between the WS8920 and the alarm panel, the RF signal between the
two units should be as free from interference as possible.
To test the RF link between the WS8920 and the alarm panel:
1. Place alarm panel into placement test (see panel installation instructions) and select zone
where WS8920 is enrolled.
2. Tamper the WS8920.
• If alarm panel receives a strong signal, panel siren squawks once and "Location is Good" is dis-
played on alarm keypad.
• If alarm panel receives a weak signal, panel siren squawks three times and "Location is Bad" is
displayed on alarm keypad.
3. If alarm system indicates a weak signal or no response, check panel programming or reposition
WS8920 and repeat test. WS8920 should only be placed in location where multiple good results
are received.
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