Mesa MSL-500 User manual

“Better MESA SAFE than Sorry!”
LOCK MODEL: MSL-500
ELECTRONIC LOCK
OPERATING INSTRUCTIONS

Dear Valued Customer:
Congratulations, on your choosing Mesa Safe to protect your valuables.
You have made an excellent choice in your security measures. Mesa Safe
Company has built a solid reputation on integrity and quality craftsmanship.
We pride ourselves in having the best products in the industry and
consistently exceeding customer expectations.
Your Mesa Safe product comes with a support team and warranty in
place that is second to none. We have the most qualified safe technicians
throughout the country ready to assist you, should you have a problem with
your unit.
Please read and understand the operating instructions of the unit, this
will ensure maximum efficiency and usability.
Page 1
TROUBLE SHOOTING
The Lock Has No Response (No Beeps)
• Make sure the battery wires in the keypad housing are not pinched and are
securely connected.
• Lock can possibly be in the lockout penalty, wait five (5) minutes and check if
the lock responds. (See Wrong try penalty on page 2)
• Replace the existing batteries with new ones. (See CHANGING YOUR
BATTERIES on page 6)
The Lock Is Responding But Does Not Unlock
• Make sure you are getting a valid response.
• Make sure you get a signal with every key stroke.
• Make sure you are not in time delay mode. (See How to open in time delay on
page 5)
• Replace the existing batteries with new ones. (See CHANGING YOUR
BATTERIES on page 6)
If the lock still does not open, contact Mesa Safe Company’s Technical Support:
800-490-5624 or 714-891-8356 (Available Mon - Fri, 8:00am - 5:00pm PST)
IMPORTANT: DO NOT RETURN SAFE TO STORE
If you are missing parts, have difficulty programming or opening your safe or
have any other questions regarding the use and care of your safe, DO NOT
RETURN your safe to the store. Please contact Technical Support at 1-800-
490-5624 for assistance.
Please visit www.mesasafe.com and see the diverse selection of products
available to meet your security needs. Thank you for choosing Mesa Safe
Company.

BASIC FEATURES AND FUNCTIONS
• 6 Personal Codes available. Keep notes on which code belongs to
which user (Users: Master, User 1, User 2, User 3, User 4 and User 5).
• The Mesa Model MSL-500 Electronic Lock is shipped from the factory
with a factory set master code. You should set the lock to your own
unique master code immediately.
• If four incorrect entries are entered in a row, the keypad will shut down
for a period of five (5) minutes. During this shut down period the keypad
will not accept any codes.
• Programmable time delay function can be set from 01 minute to 59 min-
utes.
• Optional dual user mode, in this mode two separate codes will need to
be entered to unlock safe.
SAFE OPERATION AND PROGRAMMING
Your MASTER CODE is factory set to: 1-2-3-4-5-6-7-8
HOW TO OPEN YOUR SAFE
Single User Mode (Default setting)
1. Input: Code - # (light stays green for five (5) seconds)
2. Turn the handle clockwise before the green light disappears.
• Example: 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - #.
• Invalid Code: a solid red light along with five beeps.
Dual User Mode (Please see SETTING SINGLE USER AND DUAL USER
MODE on page 4 to use this mode)
1. Input:1st Code - # (lock will beep twice)
2. Input: 2nd Code - # (light stays green for five (5) seconds)
3. Turn the handle clockwise before the green light disappears.
• Example: 1st Code - # - 2nd Code - #.
• Invalid Code: a solid red light along with five beeps.
Wrong try penalty: If four incorrect entries are entered in a row,
the keypad will shut down for a period of five (5) minutes. During
this shut down period the keypad will not accept any codes.
Page 2

Page 3
CHANGING THE MASTER CODE (Code length: 3 - 8 digit code)
Always perform this operation with the door open.
Test the new code several times before closing the door.
1. Input: (lock will beep twice)
2. Input: 8 - 8 - 8 - # (lock will beep twice)
3. Input: Current Master Code - # (lock will beep twice)
4. Input: New Master Code - # (lock will beep twice)
5. Re-Input: New Master Code - # (light stays green for three (3)
seconds)
• Example: - 8 - 8 - 8 - # - Master Code - # - New Master Code
- # - New Master Code - #.
• Unsuccessful Code Change: five beeps (the old code is still
valid), repeat steps 1 - 5.
ACTIVATE USER CODES (Code length: 3 - 8 digit code)
1. Input: (lock will beep twice)
2. Input: 3 - 3 - 3 - # (lock will beep twice)
3. Input: Current Master Code - # (lock will beep twice)
4. Input: ( User # ) - # ( User #: Specify which user you would like to
activate: 1, 2, 3, 4 or 5)
5. Input: New User Code - # (lock will beep twice)
6. Re-Input: New User Code - # (light stays green for three (3)
seconds)
• Example: - 3 - 3 - 3 - # - Master Code - # - 4 - # - New User
Code - # - New User Code - #.
(This will activate User 4)
• Unsuccessful Code Activation: five beeps, repeat steps 1 - 6.
CHANGE USER CODES (Code length: 3 - 8 digit code)
1. Input: (lock will beep twice)
2. Input: 4 - 4 - 4 - # (lock will beep twice)
3. Input: Current User Code - # (lock will beep twice)
4. Input: (
User # ) - # (User #: Enter the user # that identifies the
Current User Code on step 3)

Page 4
Change User Codes (continued)
5. Input: New User Code - # (lock will beep twice)
6. Re-Input: New User Code - # (light stays green for three (3)
seconds)
• Example: - 3 - 3 - 3 - # - User 2 Code - # - 2 - # - New User
Code - # - New User Code - #.
(This will change User 2’s Code).
• Unsuccessful Code Change: five beeps, repeat steps 1 - 6.
DELETE USER CODES
1. Input: (the lock will beep twice)
2. Input: 6 - 6 - 6 - # (the lock will beep twice)
3. Input: Current Master Code - # (the lock will beep twice)
4. Input: ( User # ) - # (the lock will beep twice)
(User #: Specify which user you would like to delete: 1, 2, 3, 4 or 5)
5. Re-Input: ( User # ) - # (light stays green for three (3) seconds)
• Example: - 6 - 6 - 6 - # - Master Code - # - 5 - # - 5 - #.
(This will delete User 5).
• Unsuccessful Code Change: five beeps, repeat steps 1 - 5.
SETTING SINGLE USER AND DUAL USER MODE
Single User Mode (Only one code needed to open safe)
1. Input: (lock will beep twice)
2. Input: 1 - 5 - 8 - # (lock will beep twice)
3. Input: Current Master Code - # (lock will beep twice)
4. Input: 1 - # (light stays green for three (3) seconds)
• Example: - 1 - 5 - 8 - # - Master Code - # - 1 - #.
• Unsuccessful Code Change: five beeps, repeat steps 1 - 4.
Dual User Mode (Two separate codes needed to open safe)
1. Input: (the lock will beep twice)
2. Input: 1 - 5 - 8 - # (the lock will beep twice)
3. Input: Current Master Code - # (the lock will beep twice)
4. Input: 2 - # (light stays green for three (3) seconds)

Page 5
Dual User Mode (continued)
• Example: - 1 - 5 - 8 - # - Master Code - # - 2 - #.
• Unsuccessful Code Change: five beeps, repeat steps 1 - 4.
• The Master Code will override dual user mode.
• Please see HOW TO OPEN YOUR SAFE on page 2 to use this mode.
SETTING TIME DELAY (1 to 59 minute time delay)
1. Input: (the lock will beep twice)
2. Input: 1 - 5 - 9 - # (the lock will beep twice)
3. Input: Current Master Code - # (the lock will beep twice)
4. Input: (00 - 59) - # (light stays green for three (3) seconds)
01 = 1 minute time delay
59 = 59 minute time delay
00 = Will turn time delay mode off
• Example: - 1 - 5 - 9 - # - Master Code - # - 03 - #.
(This will set the time delay period to 3 minutes).
• Unsuccessful Code Change: five beeps, repeat steps 1 - 4.
• The Master Code will override the time delay.
How to open in time delay
1. Enter any valid code other than the Master Code.
2. Once the code is entered the time delay will activate.
3. During the time delay, codes will not be accepted, when you
press any key the light will stay orange for three (3) seconds.
4. The lock will beep continuously and the light will stay green for
the last thirty (30) seconds of the time delay period.
5. Once the continuous beeps stop, the lock will unlock for five (5)
seconds.
6. Turn the handle to open safe.
Low Battery Warnings
• Red light appears when you open the safe other than the green light.
• Enter your code and get a valid response but the lock doesn’t unlock.

Page 6
CHANGING YOUR BATTERIES
1. Locate the battery cover on the bottom edge of the keypad and
remove the cover by pulling on the tab.
2. Carefully and gently remove the 9-volt battery from the compart-
ment.
CAUTION! Hold onto battery connector to avoid pulling
wires out of housing.
3. Carefully reinsert the new 9V alkaline battery, do not force the
battery into the compartment.
4. The lock will retain all current codes and settings.
IMPORTANT: DO NOT RETURN SAFE TO STORE
If you are missing parts, have difficulty programming or opening your safe or
have any other questions regarding the use and care of your safe, DO NOT
RETURN your safe to the store. Please contact Technical Support at 1-800-
490-5624 for assistance.

“Better MESA SAFE than Sorry!”
MESA SAFE COMPANY
P.O. Box 52282
Irvine, CA 92619
Phone: [phone] Fax: [phone]
www.mesasafe.com
[e-mail]