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Bright brass cylindrical knob lock with pushbutton keypad and unified trim plate

Simplex

Simplex 1021S-3 Brass US3 Mechanical Knob Pushbutton Combination Door Lock

SKU CH-7BG2-3H0NY MPN 1021S-3

Mechanical pushbutton combination knob lock for LFIC Schlage cores with adjustable backset and three-hour fire rating

  • FinishBright Brass
  • Selling UnitBox
  • Backset2-3/4" - 2-3/8"
  • KeyingKeyed Different
  • Keyless entry via pushbutton combination eliminates key management costs
  • Mechanical operation removes battery replacement material and labour expense
  • Adjustable backset 60 mm or 70 mm fits standard door preparations
  • Fits wood or metal doors 35 mm to 57 mm thick
  • Three-hour UL/ULC fire rating on A-label doors for safety

Mechanical pushbutton lock for LFIC Schlage cores

This Simplex 1021S-3 mechanical knob lock grants exterior access by a single combination code programmed at the keypad. It removes the cost and labour of battery changes or key management. The heavy-duty cylindrical housing carries a three-hour UL/ULC fire rating on A-label doors.

Suits doors 35 to 57 mm thick

The adjustable latch fits wood or metal doors from 35 mm to 57 mm thick and a backset of either 60 mm or 70 mm. Free egress is always available from the inside. Buyers who need multiple user codes or audit trails should look at a different system.

Requires separate LFIC Schlage core to operate

The lock body is sold without a core; a Large Format Interchangeable Core compatible with Schlage keyways must be supplied and installed separately. Without that core the cylinder cannot be keyed and the lock will not function.

Highlights

  • Keyless entry via pushbutton combination eliminates key management costs
  • Mechanical operation removes battery replacement material and labour expense
  • Adjustable backset 60 mm or 70 mm fits standard door preparations
  • Fits wood or metal doors 35 mm to 57 mm thick
  • Three-hour UL/ULC fire rating on A-label doors for safety

Specifications

BrandSimplex
Model1021S-3
FinishBright Brass
Selling UnitBox
Backset2-3/4" - 2-3/8"
KeyingKeyed Different

Questions about this item

How do I confirm the 1021S-3 is working correctly after installation?

Enter your programmed code on the pushbutton keypad; the knob should turn smoothly to retract the 13 mm x 19 mm latch, then relock automatically when released, and the door must open freely from inside without a code.

What comes in the box and what must I purchase separately for the 1021S-3?

The box contains the mechanical combination lock body, both knob assemblies, unified trim plate, adjustable backset latch (60 mm or 70 mm), and mounting hardware; an LFIC Schlage core is not included and must be bought separately.

Which backset setting should I choose for the 1021S-3 on my door?

Measure from the door edge to the centre of the existing bore hole; if it is 60 mm use the 2-3/8" setting, if it is 70 mm use the 2-3/4" setting — the lock adjusts to either without extra parts.

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