Rockwood DL-GS3550 Architectural Door Hardware Accessory

The Rockwood DL-GS3550 is a battery-operated digital glass door lock with fingerprint, PIN code, and proximity card access for 3/8-inch to 1/2-inch interior glass doors. Part of the ASSA ABLOY BRUKEN Glass Solutions line, it features a touchscreen keypad, supports up to 99 users, and installs without drilling or modifying the glass. The black-finish lock operates on four AA alkaline batteries and includes two access cards, automatic re-locking, and a real-time low-battery warning.

Rockwood DL-GS3550 BRUKEN Digital Glass Door Lock with Fingerprint, Keypad, and Card Reader

The Rockwood DL-GS3550 BRUKEN Digital Glass Door Lock is a standalone electronic access control lock designed for interior all-glass doors in commercial offices, conference rooms, private workspaces, and other controlled-access environments. Manufactured under ASSA ABLOY's Glass Solutions product line, the DL-GS3550 combines three keyless entry methods: biometric fingerprint recognition, numeric PIN code entry, and proximity card access. Its contemporary black finish and sleek touchscreen interface complement modern architectural glass installations while providing an additional layer of security without requiring a traditional keyed cylinder. The lock supports up to 99 users plus an administrator, allowing authorized personnel to access secured rooms using individually enrolled credentials. Two access cards are included for initial setup and operation.

The DL-GS3550 incorporates an electronic touchscreen keypad, integrated fingerprint reader, and contactless card reader, giving users three independent methods of unlocking compatible interior glass doors. The system accommodates up to 100 fingerprints, 100 access cards, and 100 passwords, including one administrator credential and 99 user credentials within each category. Numeric access passwords contain 6 to 8 digits, while compatible MF or IC cards provide convenient credential-based entry. Individual users can be configured with multiple authentication methods, allowing the same person to access the door by fingerprint, card, or PIN. The lock also includes an optional automatic re-locking function that secures the opening after the door closes, reducing the possibility of leaving a controlled-access room unsecured. An integrated display provides visible operating status and real-time battery voltage information, alerting users when battery replacement is necessary.

The Rockwood DL-GS3550 is engineered for 3/8-inch to 1/2-inch (9.5 to 12.7 mm) thick interior glass doors and supports both single-door and paired-glass-door configurations. Its mounting design allows installation without drilling, cutting, or fabricating the glass, simplifying retrofits and preserving the appearance of existing architectural glazing. A surface-mounted strike plate is included for double-glass-door applications, while the lock's field-reversible configuration accommodates different door handing requirements. The housing measures 7-7/8 inches high, 3-1/16 inches wide, and 2-3/4 inches deep and combines a plastic front body with an aluminum and plastic rear assembly. The locking mechanism incorporates twin bolts measuring 7/16 inch in diameter with a 1-1/8-inch throw. Power is supplied by four standard AA alkaline batteries, eliminating the need for electrical wiring or a centralized access control power supply. The manufacturer specifies an operating temperature range of 5 F to 150 F (-25 C to 65 C) for approved indoor installations.

The Rockwood DL-GS3550 provides self-contained keyless access control for interior glass office doors, meeting rooms, conference facilities, and other commercial spaces where conventional mortise locks or cylindrical hardware are impractical. Unlike network-connected access control systems that require separate door controllers, readers, and wiring, the DL-GS3550 integrates credential authentication, local user management, and electronic locking into a single battery-powered assembly. Its fingerprint recognition, programmable user credentials, automatic re-locking, and low-battery monitoring support everyday access management without modifying the glass door. The lock's black finish and compact construction make it particularly suitable for modern office partitions and frameless glass entrances. Designed exclusively for interior applications, the DL-GS3550 offers a practical alternative to traditional mechanical glass door hardware when standalone electronic access control is required. Installation and use must comply with applicable door egress, accessibility, and building safety requirements.