Armstrong Auto Return to Zero Function-4 dial Combination Lock DL-202 (DL-202)

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The Armstrong Auto Return to Zero Function 4-Dial Combination Lock (DL-202) is a high-security mechanical lock designed for cabinets, lockers, office furniture, mailboxes, and storage enclosures. Featuring an innovative auto return-to-zero (scramble) function, the dials automatically reset after opening and closing, enhancing security by concealing the combination. Constructed from durable zinc alloy, this battery-free lock provides reliable keyless protection with easy operation and flexible installation for both steel and wooden cabinets.

  • Auto Return-to-Zero Function: Automatically resets the dials after each use, keeping the combination concealed for enhanced security.
  • 4-Digit Keyless Combination: Resettable four-digit mechanical code provides secure access without the need for keys.
  • Durable Zinc Alloy Construction: Strong, corrosion-resistant body ensures reliable performance and long service life.
  • Battery-Free Mechanical Operation: No batteries or electronic components required, offering maintenance-free and dependable locking.
  • Versatile Applications: Suitable for lockers, filing cabinets, office furniture, mailboxes, storage cabinets, and commercial enclosures.

Description

4-Dial Auto Return-to-Zero Combination Lock for Cabinets & Lockers

Auto Return-to-Zero Security

The built-in scramble function automatically resets the dials to zero after every use, preventing unauthorized users from identifying the last combination entered and improving overall security.

4-Dial Mechanical Combination

The resettable four-digit combination provides thousands of possible code combinations, delivering secure keyless access without traditional keys.

Heavy-Duty Zinc Alloy Construction

Manufactured from high-quality zinc alloy for excellent durability, corrosion resistance, and long service life in residential, commercial, and industrial environments.

Emergency Key Override

An optional emergency key override allows authorized access if the combination is forgotten, while optional master key functionality is available for professional applications.

Flexible Installation

Suitable for steel panels (1–4 mm) and wooden panels (17–22 mm), with left-hand, right-hand, vertical, and horizontal mounting options to accommodate different cabinet designs.

Key Benefits in Detail

  • Auto return-to-zero scramble function.
  • Resettable 4-digit mechanical combination.
  • Durable zinc alloy housing.
  • Battery-free operation.
  • Optional emergency key override and master key system.

Where and How It’s Used

Ideal for office cabinets, lockers, filing cabinets, mailboxes, retail fixtures, medical storage units, school lockers, commercial furniture, and secure storage cabinets requiring reliable keyless access.

Usage Instructions

Install the lock on a compatible steel or wooden cabinet, set the preferred four-digit combination, and use the dials for secure keyless access. After locking or unlocking, the dials automatically return to zero for added security. Use the emergency override key if configured and required.

Technical Specifications

  • Brand: Armstrong
  • Model: DL-202
  • Product Type: Auto Return-to-Zero 4-Digit Combination Lock
  • Material: Zinc Alloy
  • Lock Type: Mechanical Combination Lock
  • Access Method: 4-Digit Resettable Keyless Combination
  • Special Feature: Auto Return-to-Zero (Auto Scramble) Function
  • Panel Thickness: Steel 1–4 mm / Wood 17–22 mm
  • Installation: Left/Right & Horizontal/Vertical (Model Dependent)
  • Application: Lockers, Filing Cabinets, Office Furniture & Storage Cabinets

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