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Simplex 900 Series User Manual

Simplex 900 Series
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[Note: If your lock is opening on every turn of the knob or lever, except upon entering a code, this may be a
ZERO CODE. Before attempting to remove the lock from the door, refer to the troubleshooting procedures
outlined at bottom of this document for a zero code symptom/solution.]
2015 Series FAQ
Changing the Code / Combination
Important: Perform this procedure with the DOOR OPEN.
Read the instructions through once before attempting to change the combination.
The factory pre-set combination is 2 and 4 pressed simultaneously (and released), then press 3 (and release).
Tool Required: Control Key
1. Insert the control Key into the lock and turn it 90° to the right (clockwise) to the
horizontal position to unlock the front lock assembly from the mounting bracket
(see figure 1).
2. Remove the front lock assembly from the mounting bracket by pulling it away
from the door.
3. While holding the lock in your hand, turn the knob to the left (counterclockwise)
to the stop position and release.
4. Enter the existing combination. Make sure you depress each button fully and
release.
5. Use your finger to depress the lockout slide (see figure 2). A slight click should
be felt.
6. Rotate the turn knob to the left (counterclockwise) to the stop position to clear
the old combination, then release.
7. Select a new combination, write it down. Some or all of the buttons may be used for your new combination
- pressed individually or simultaneously.
Each button may be used only once. We do not recommend the use of a one-button combination.
8. With the door open, enter your new combination. Depress each button fully and release it. You must feel a
click each time you press a button to know that the button was fully depressed.
9. Turn the knob to the right (clockwise) to the stop position to activate the new combination and release.

Questions and Answers:

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Simplex 900 Series Specifications

General IconGeneral
Key OverrideOptional
Door Thickness1-3/4" to 2-1/4"
Backset2-3/4"
Number of CodesNot applicable
Code LengthNot applicable
FinishesSatin chrome
Operating Temperature-4°F to 150°F (-20°C to 66°C)

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