Chamberlain EL Series Programming Manual page 28

UNIT CONTROLLING 4 DOORS
Relay 3 - Strike Mode
Unlocks door for 10 sec.
Wiegand Keypad (Exit)
Wiegand Card Reader
(Back Door)
Relay 2 - Strike Mode
Unlocks Door for 10 sec.
Main Keypad
(Front Door)
27
Wiegand Card Reader
(Manager's Door)
Relay 4 - Strike Mode
Unlocks Door for 10 sec.
Relay 1 - Strike Mode
Unlocks Door for 10 sec.