Master Lock 3681 Users Manual

Electronic Built-In Lock • Spanish Electronic Built-In Lock • French Electronic Built-In Lock

Installation Instructions • Instructions d’installation
Instrucciones de instalación

3681 • 3685

1. Open box

• To prevent damage to the lock, DO NOT USE a sharp object to open packaging

• Keypad module and lock module will be in same package

2. Remove keypad module and lock module from package

3. Open locker door

4. With one hand, align front housing through 2 mounting holes on the front of the locker door. (A)

• Pull the connection ribbon through the large middle mounting hole

• Note: The diameter of the mounting holes must be 7/32in minimum for proper installation
and fit. If the holes are undersized, a 7/32in drill bit can be used to widen them.

5. With your other hand, line up the lock module on the back of the door and attach the
connection ribbon (B)

6. Feed excess ribbon cable back into center mounting hole (C)

7. Line up the threaded screws from the keypad module with the holes in the lock module (D)

8. Install nuts on the threaded screw and tighten with 3/8in nut driver (E)

• Note: Tighten fastener to a maximum torque of 3N-m (20-25in-lbs) to avoid product damage
or lock failure

9. Close locker door

10. Test lock for functionality (Refer to Multi-User and Single-User Instructions)

(A)

Notes:

1. Battery included

2. Lock is configured to work on 1/32in, 1/2in, and 3/4in door depths

3. Lock is configured to work on left and right hinged doors

1. Open box

• To prevent damage to the lock, DO NOT USE a sharp object to open packaging

• Keypad module and lock module will be in same package

2. Remove keypad module and lock module from package

3. Open locker door

4. With one hand, align front housing through 2 mounting holes on the front of the locker door. (A)

• Pull the connection ribbon through the large middle mounting hole

• Note: the diameter of the mounting holes must be 7/32in minimum for proper installation
and fit. If the holes are undersized, a 7/32in drill bit can be used to widen them.

5. With your other hand, line up the lock module on the back of the door and attach the
connection ribbon (B)

6. Feed excess ribbon cable back into center mounting hole (C)

7. Line up the threaded screws from the keypad module with the holes in the lock module (D)

8. Install nuts on the threaded screw and tighten with 3/8in nut driver (E)

• Note: tighten fastener to a maximum torque of 3N-m (20-25in-lbs) to avoid product damage
or lock failure

9. Close locker door

10. Test lock for functionality (Refer to Multi-User and Single-User Instructions)

Notes:

1. Battery included

2. Lock is configured to work on 1/32in, 1/2in, and 3/4in door depths

3. Lock is configured to work on left and right hinged doors

(B)

(C)

continu ed on other s ide / continué a l’autre c ôté / continuado al ot ro lado

1. Open box

1

2

3

6

10 9

8

4

5

• To prevent damage to the lock, DO NOT USE a sharp object to open packaging

• Keypad module and lock module will be in same package

2. Remove keypad module and lock module from package

3. Open locker door

4. With one hand, align front housing through 2 mounting holes on the front of the locker door. (A)

• Pull the connection ribbon through the large middle mounting hole

• Note: The diameter of the mounting holes must be 7/32in minimum for proper installation
and fit. If the holes are undersized, a 7/32in drill bit can be used to widen them.

5. With your other hand, line up the lock module on the back of the door and attach the
connection ribbon (B)

6. Feed excess ribbon cable back into center mounting hole (C)

7. Line up the threaded screws from the keypad module with the holes in the lock module (D)

8. Install nuts on the threaded screw and tighten with 3/8in nut driver (E)

• Note: Tighten fastener to a maximum torque of 3N-m (20-25in-lbs) to avoid product damage
or lock failure

9. Close locker door

10. Test lock for functionality (Refer to Multi-User and Single-User Instructions)

Notes:

1. Battery included

2. Lock is configured to work on 1/32in, 1/2in, and 3/4in door depths

3. Lock is configured to work on left and right hinged doors

(D)

(E)

Display Screen Key
Display Screen Key
Display Screen Key

1. Low Battery

2. Settings Mode

3. Locked

4. Unlocked

5. Single-User Mode

6. Bluetooth Mode -
ADA Model Only
(FOB Required)

7. Invalid Code

8. Bolt Jam

9. Entered Code

10. Awaiting Code

Notice: This device complies with Industr y Canada’s license-exempt RSSs. Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept
any interference including interference that may cause undesired operation of the device.

Notice: This device complies with Part 15 of the F CC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause undesired operation.

Changes or modifications made to this equipment not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

Notice: This device complies with Industr y Canada’s license-exempt RSSs. Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept
any interference including interference that may cause undesired operation of the device.

Notice: This device complies with Part 15 of the F CC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause undesired operation.

Changes or modifications made to this equipment not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

1. Low Battery

2. Settings Mode

3. Locked

4. Unlocked

5. Single-User Mode

6. Bluetooth Mode -
ADA Model Only
(FOB Required)

7. Invalid Code

8. Bolt Jam

9. Entered Code

10. Awaiting Code

1. Low Battery

2. Settings Mode

3. Locked

4. Unlocked

5. Single-User Mode

6. Bluetooth Mode -
ADA Model Only
(FOB Required)

7. Invalid Code

8. Bolt Jam

9. Entered Code

10. Awaiting Code

The Bluetooth® word mar k and logos
are registered trademarks owned by
Blueto oth SIG, Inc. an d used under
license by M aster Lock Co mpany LLC.

Le mot servant de marque Bluetooth®
et les log os sont des marque s
enregistrétés de Bluetooth SIG, Inc.
et, utili sés sous license p ar
Maste r Lock Company L LC.

La pala bra marca Blueto oth®
y los logo s son marcas regis tradas
de propie dad de Bluetooth S IG, Inc.
y utilizad as bajo licencia po r
Maste r Lock Company L LC.

Notice: This device complies with Industr y Canada’s license-exempt RSSs. Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept
any interference including interference that may cause undesired operation of the device.

Notice: This device complies with Part 15 of the F CC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause undesired operation.

Changes or modifications made to this equipment not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

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Master Lock Company LLC, Milwaukee, WI 53210 U.S.A. | 800-308-9244
Master Lock Canada, Oakville, Ontario L6H 5S7 Canada | 800-227-9599

P52953