
9
Battery failure modes
L
The battery failure mode is set using the SUS. See the SUS user guide for more
information.
Mode
Description
Fail As-Is (default)
Lock remains in current state until batteries are replaced.
Fail Unlocked
1
Lock unlocks and remains unlocked until batteries are replaced.
Fail Locked
1
Lock locks and remains locked until batteries are replaced.
1 Fail Unlocked and Fail Locked modes are not available if lock is externally powered.
External power supply
The AD-250 may be connected to external power using a UL294 listed Power Supply for UL
installations, and a power supply that complies with CAN/UL-S318 or CAN/ULC-S319 for cUL
installations. The power supply must be capable of sourcing at least 250mA @ 12 or 24 VDC
(Schlage PS902, PS904, PS906).
L
When powered with external power supply, the lock will always fail “As-Is” if
power is lost.
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+
Inside
!
Polarity Required