User manual

WK820&RC840 3
Figure B.14: RC840
REGISTRATION PROCEDURE
To register wireless keypads:
1. From the Programming menu, select Devices, Keypads [913].
2. Select the keypad you want to register; the system initiates
Registration mode.
3. Press a button on the keypad making sure that a LED lights
up when the button is pressed.
4. Press the same button again. When Save? appears on the
panel’s LCD display, press 9.
BATTERY REPLACEMENT (WK820)
Every time a key is pressed, one of the battery status LEDs is lit. When the battery
needs to be replaced, the red Low Battery LED is lit.
To replace the battery:
1. Insert a small screwdriver into the pry-off slots at the bottom of the unit
and twist to remove the back cover.
2. Observing correct polarity, replace the battery (9V, alkaline).
3. Replace the back cover making sure that the two covers click shut.
9V
A
lkaline
Battery
Tampe
r
Switch
Buzze
r
Figure B.15: WK820 (back cover off)