S&G Electronic Locks

Sargent & Greenleaf electronic safe lock lineup with combination change instructions.

S&G Electronic Lock Lineup

Sargent & Greenleaf offers a range of electronic safe locks for commercial, government, and high-security applications.

Model 6120 / 6123 / 6124 / 6125 Standard

Keypad locks • Proven reliability

6123

Standard Keypad

Most common S&G electronic lock.

  • 2 users (Master + User)
  • 6-digit combinations
  • Time delay 1-99 min
  • Wrong-try penalty
Best: Commercial safes

6124

Backlit Keypad

Same as 6123 with backlit keys.

  • Illuminated buttons
  • Low-light operation
  • Same features as 6123
Best: Dark locations

6125

Compact Keypad

Smaller footprint for tight spaces.

  • Reduced size
  • Same reliability
  • Standard features
Best: Small safes

6120

Legacy Model

Older generation, still widely used.

  • 1 user code
  • Proven design
  • Parts available
Best: Existing installs

Audit Lock 2.0 / Z-Series Audit Trail

Multi-user • Event logging • Network capable
👥
Up to 99 UsersFull user management
📋
Audit Trail1000+ events
📅
Time WindowsScheduled access
🔌
NetworkOptional connection

Best for: Banks, ATMs, cash vaults, compliance requirements

Model Comparison

Feature 6123 Titan Audit 2.0
Users 2 9 99
Audit Trail
Time Delay
Dual User
IP Rating - IP55 -
Best For Basic Premium Enterprise

Changing Combinations

⚠️ Important

  • Test new codes with door OPEN
  • Write down new codes and store securely
  • Change default codes immediately after installation
  • 4-5 wrong entries triggers lockout penalty

6123 / Titan - Change Master Code

Standard S&G procedure

Default Codes

Master

1 2 3 4 5 6
Factory default

User

Not Set
Add via Master

Supervisor

Model specific
If equipped

Change Master Combination

  1. With safe door open, enter current Master code
  2. Within 4 seconds, press *
  3. Enter 0 (zero for Master change)
  4. Enter current Master code
  5. Enter new 6-digit code
  6. Re-enter new code to confirm
  7. Lock confirms with double beep
  8. Test new code with door open
Summary:
[Old Code] + * + 0 + [Old Code] + [New Code] + [New Code]

Add/Change User Code

  1. Enter Master code
  2. Within 4 seconds, press *
  3. Enter 1 (one for User)
  4. Enter Master code again
  5. Enter new User code (6 digits)
  6. Re-enter new User code
  7. Lock confirms with double beep
Summary:
[Master] + * + 1 + [Master] + [New User] + [New User]

Model 6120 - Change Code

Legacy model procedure

Default Code

Factory Code

50 25 50
3 x 2-digit numbers

Change Combination (Method 1)

  1. Open the safe door
  2. Enter current combo (don't turn handle)
  3. Hold * for 3 seconds until beep
  4. Enter current combo again
  5. Enter new combo (6 digits)
  6. Re-enter new combo
  7. Wait for confirmation beep
  8. Test with door open!

💡 6120 Code Format

Can be entered as 6 individual digits or 3 two-digit numbers (e.g., 50 25 50 or 5 0 2 5 5 0)

Delete User Code

Remove user access
  1. Enter Master code
  2. Within 4 seconds, press *
  3. Enter 1 (User position)
  4. Enter Master code
  5. Press * * * * * * (6 asterisks)
  6. Press * * * * * * again
  7. User code is now deleted

Set Time Delay

Robbery deterrent feature
  1. Enter Master code
  2. Press * 3
  3. Enter Master code
  4. Enter delay time in 2 digits (01-99 min)
  5. Enter opening window in 2 digits (01-19 min)

💡 Example

05 delay + 05 window = 5 minute wait, then 5 minutes to open

LED & Audio Signals

🟢
Green + beepValid code accepted
🔴
Red + beepInvalid code
🔴🔴🔴
3 red flashesWrong code entered
🔴⏱️
Red continuousLockout penalty
🟢🟢
Double beepCommand accepted
🔋
Rapid beepsLow battery

Troubleshooting

  • No response: Replace 9V battery (use alkaline)
  • Wrong code: Wait 30 seconds, 4-5 wrong = 5-15 min lockout
  • Forgot code: Call Key-En-Lock for safe opening service
  • Code change failed: Start over, ensure door is open
  • Lockout: Wait for penalty period to expire

Need S&G Lock Service?

Combination changes, safe opening, lock upgrades.

📞 (321) 224-5625

📘 Related Pages

S&G Dial LocksLock UpgradesSafe Services