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Lockey KOS Add-On Key Override System

The Lockey 2000 Series Key Override Kit lets you add a key override to any of the following Lockey 2000 Series and 2900 Series locks (ie, 2200, 2210, 2230, 2435, 2500, 2830, 2835, 285P, 2900, 2930, 2945, 2950, 2985 single or double-sided keyless locks).

Unlike a key override option that is built into the round flat knob on the outside lock body, this product does NOT alter the Manufacturer's Life-Time Mechanical Warranty. In fact, this is the only way these Lockey 2000 & 2900 Series locks can have both a key override AND a Life-Time Warranty. Use with either a new Lockey lock or install it on an existing Lockey keyless lock.

Life-Time Mechanical Warranty 30-Day Money Back Guarantee All Weather All Mechanical-needs no electricity
Lockey KOS Add-On Key Override System
Click image to enlarge. Source: LockeyUSA 2018 Catalog. Questions: 1-888-202-4538.


Starting at: $60.75  $44.99
Save: 26% off

Select the Options You Want:

(1) Locks with knob on outside/lever on inside have a Hold-Open slider switch to leave door unlatched. (2) Locks with lever on outside/lever on inside have a passage mode to leave door latched, but not locked. (3) Code is needed to enter (but not exit) passage mode.

Some colors are not available on all locks.

Lockey Colors
(click to enlarge)

Pay less when you buy more! 1,2

1 This table shows the starting price, not including any additional options.

2 The additional cost of options selected (if any) are not discounted.


  • ADA COMPLIANT:  yes, if mounted at proper height.
  • BOLT TYPE: deadbolt (must be locked manually); hook bolt (must be locked manually); mortised dead-locking latchbolt (locks automatically); rotating flat bar deadbolt (must be locked manually); slide-bar deadbolt (must be locked manually); spring-loaded latchbolt (locks automatically).
  • CODE LENGTH: from all to none of the numbers or letters on keypad except C and R.
  • DOOR THICKNESS: fits cabinet doors 1-1/8" to 2"; Thick Door Kit available (up to 5" thick).
  • DOOR TYPE: for interior doors that slide, like sliding doors and pocket doors; for interior or exterior doors that swing on hinges; for narrow-style commercial doors on hinges; for panic bar doors (aka crash bars/push bars) that swing on hinges.
  • FINISHES: antique brass; jet black; marine-grade Teflon (silver); oil rubbed bronze; satin chrome; satin nickel; white.
  • HANDING: reversible (can be installed on left or right side).
  • HANDLE: lever handle on both sides; round, flat knob on outside; thumb turn on inside.
  • INSTALLATION: surface-mounted on door or gate.
  • KEY OVERRIDE: standard.
  • KEY: comes with 2 keys.
  • KEYPAD: double-sided (on both sides); single-sided (on one side only).
  • NETWORK: none (standalone).
  • POWER REQUIRED: none, this product is 100% mechanical and uses no power.
  • PRODUCT LINE: Lockey 2000 Series; Lockey 2900 Series; Lockey P Series.
  • USAGE: commercial; residential.
  • WARRANTY: Life-Time on Lockey keyless lock.
  • WEATHER: weather-resistant.


Lockey KOS Key Override System - Installation Instructions (PDF)