Page 2
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...
Page 3
• 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.
Page 4
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.
Page 5
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 •...
Page 6
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. •...
Page 7
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.
Page 8
“Better MESA SAFE than Sorry!” MESA SAFE COMPANY P.O. Box 52282 Irvine, CA 92619 Phone: 714-891-8356 Fax: 714-891-8474 www.mesasafe.com sales@mesasafe.com...
Need help?
Do you have a question about the MSL-500 and is the answer not in the manual?
Questions and answers
How do you take off the housing off the safe itself to plug the wire back in?