Reduced price! Master Lock 3685 Electronic Built-In Locker Lock View larger

Master Lock

Master Lock 3685 Electronic Built-In Locker Lock



Once production has begun on a made-to-order item, the order cannot be cancelled even if the item hasn't yet shipped. Returns and exchanges are also not accepted unless the product arrived defective. All custom specs including key number and custom stamps or marks must be requested before the order is put into production and processed.

Item normally ships out within 1-2 Weeks (excluding transit time). If out of stock it can take up to 3-4 weeks (excluding transit time). Specific options may or may not increase shipping time. For any reason, if there is a delay in shipping time we will notify you. Feel free to contact us if you have any concerns.


40% Off


Details: Master Lock 3685 Electronic Built-In Locker Lock


Elevate the experience

  • A single CR123A 3V lithium battery lasts longer to help minimize maintenance
  • Sensors provide visual & audible alerts to signal if locking mechanism is blocked
  • Electromechanical deadbolt enhances security
  • High-quality materials withstand high-moisture environments
  • Ability to turn sound on/off
  • 9V battery backup jump port to temporarily power lock if battery dies
  • Unique master backup code allows administrative access to locker
  • High-gloss keypad allows users to easily create personal codes
  • Option to set code length to 4, 5 or 6 digits
  • Option to switch between single-user and multi-user lock modes
  • Large icons clearly show locker vacancy status
  • High-visibilitiy display provides interactive feedback

Lock Specifications

Product Number
Display Unit Dimensions
3-15/16in (77mm) H × 2-1/8in (54mm) W × 1in (25mm) D
Bolt Housing Dimensions
3in (76mm) H × 3-3/4in (95mm) W × 1-5/16in (34mm) D
0.89 lbs (408 g)
Battery Type
CR123A 3V
Jump Battery
Operating Temperatures
0°F to 125°F (-17?C to 51?C)
12-button keypad
Master Carton Quantity

Available Model Numbers and Combinations

3685 Not Included
3681 Included


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Master Lock 3685 Electronic Built-In Locker Lock

Master Lock 3685 Electronic Built-In Locker Lock