Stanley Security Solutions  

A division of Stanley Security Solutions 

  D-4990 Low Energy Operator

D1610 Economical Door Closer | D3550 Commerical Door Closer | D4550 Institutional Door Closer | D4990 Low Energy Operator | D-4550EH Single-Point Hold-Open Door Closer


Stanley Security Solutions is pleased to offer its latest product line designed to maximize public door accessibility for Americans with Disabilities Act (ADA) Title III applications. The D-4990 Low Energy Operator offers Stanley's newest and most convenient features to gain safe access for ADA applications. ADA is a civil rights law that is intended to guarantee equality for those who are physically handicapped or disabled. There are four major sections of the bill and they are intended to prohibit discrimination in Employment, Public Service, Public Accommodations, and Telecommunications. Stanley Security Solutions’ focus is on Title III (Public Accommodations). Title III is not a product specification or a building code, but a directive to ensure equality in accessibility within public buildings. Such things as door opening size, door opening force requirements, door closing time, degree of door opening, and door and lock handle designs must all be addressed to satisfy the ADA guidelines.


Access Controls: The D-4990 Low Energy Operator may be used with electric latch retraction exit devices, electric strikes, and other electric locking systems. A time delay function is built into the control system eliminating the need for supplemental relays or controls.

Activation: The D-4990 Low Energy Operator is a “Power Open” operator that can be activated with the press of a switch. Virtually any form of “knowing act” can be used to initiate the operator making integration with existing systems easier. For the full line of activation devices that Precision hardware offers see page 10.

Push and Go Option: With the flip of a switch, the D-4990 Low Energy Operator can be configured to activate and open based on a slight movement of the door. Utilizing this option eliminates the need for supplemental activation devices but does not preclude their use.

Hold-Open Timer: Upon receipt of an activation signal, the operator will power open the door from the closed position. The door may be held in the open position up to 28 seconds (compliance with ANSI/BHMA A156.19 requires the door to remain in the open position for a 5 second minimum). Additionally, a “hold-open” switch is provided to hold the door open for extended periods.

External Function Switches: The D-4990 Low Energy Operator is equipped with external function switches providing basic controls.

  • Illuminated Power Switch: Illuminated to be visible at night, the switch controls power to the operator motor. The D-4990 Low Energy Operator functions as a manual closer with power off.
  • Mode Control Switch: A three function switch is provided for control of the powered function of the operator. “Day” mode will engage the operator for normal powered operation with activation by push plate, “Push and Go”, or signal from other “knowing act” device. “Night” mode disables the operator for normal powered operation; however, the operator can be configured to receive activation signals from a secure activation device such as a card reader for secure activation, generally from one side. Switching to “Hold-Open” mode will power the operator opening the door, holding it open indefinitely.

Obstruction Detection: During the opening cycle an obstruction function effectively reduces the possibility of personal injury in accordance with A156.19. Additionally this feature prevents damage to door and/or surrounding structures. After a stall time-out, the door will close at a rate and force set by the integrated hydraulic closer.

Power-Close Option: This switched feature can be used to control exterior openings that require additional closing force to resist interior stack pressures and wind conditions that do not allow the door to close properly. Use this feature to reduce heating and cooling loss and save energy and money.

D-4990 Door Closer:

  • Adjustment: The D-4990 Low Energy Operator (which incorporates the Heavy Duty D-4550 Stanley Door Closer) provides the industry's widest range of field adjustable spring power settings. This allows you to adjust the operator for the correct opening and closing forces to meet any specific application. The closer within the D-4990 Low Energy Operator also incorporates multiple regulating valves, including the V-Slotted Valve Regulation, which maximizes fine tune adjustment capabilities.
  • Door Closer Body: The incorporated D-4550 Stanley Door Closer body is constructed of R-14 Aluminum Alloy providing wear resistance from contact with the piston during the opening and closing. In addition the R-14 Aluminum Alloy body holds the Cylinder Body dimensionally stable under extreme internal hydraulic pressures.

Internal Cycle Counter: The D-4990 Low Energy Operator comes equipped with two independent internal cycle counters. The cycle counters provide current data on manual and powered operations.

Vestibule Function: Each D-4990 Low Energy Operator is equipped with a vestibule function control. This field selectable function provides electronic sequencing to control the opening of doors within a vestibule application. Sequencing reduces exposure to the exterior elements. Controlling the opening sequence of a paired vestibule, provides convenience and saves energy to the facility.

Optional Power Supply: The optional PS-490 24VDC @ 0.5A power supply is available to provide power to auxiliary electrified hardware such as electric strikes. This optional power supply can be mounted within the D-4990 Low Energy Operator housing.



• Power input: 115 VAC ±15% 60 Hz
• Current draw: 2A maximum
• Auxiliary output: 24VAC @ 0.125A maximum
• Solid state output can signal electric strikes (For powering strikes see page 7.) Certifications
• ANSI/BHMA A156.19 certified Standard For Power Assist And Low Energy Power Operated Doors
• UL 325 Standard for Door, Drapery, Gate, Louver, and Window Operators and Systems or use on fire and smoke check doors
• UL 228 Standard for Door Closers-Holders, With or Without Integral Smoke Detectors
• Meets requirements for UL 10B, 10C and UBC 7.2 for positive pressure
• Meets ADA – Americans With Disabilities Act
• Complies with ANSI 117.1 section 4.13
• In compliance with FCC 47 CFR Part 15 Class B emissions requirements (USA)


Exterior Finishes
628 – satin aluminum, clear anodized
313AN – dark bronze anodized

Two years from the date of invoice

Package Includes:
• D-4990 Low Energy Operator (Non-handed)
• Standard Arm (PUSH side) or Track Arm (PULL side)
• Mounting template
• Technical manual
• Door closer spring adjustment wrench
• Tuning screwdriver
• Signs (see page 11)


Download the Brochure here



D-4990 Brochure

Download the Brochure here




  © 2006 Stanley Security Solutions, Inc.
6161 East 75th Street | Indianapolis, IN | 46250
Tel 317 849 2250