Best (Stanley) D-4990 Low Energy Operator

BEST D-4990
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Was: $5,247.00
Now: $3,463.02

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Product Overview

The D-4990 Low Energy Operator offers Best's newest and most convenient features to gain safe access for ADA applications. Used with electric latch retraction exit devices, electric strikes and other electric locking systems. A time delay function is integrated into the control system. The D-4990 Series eliminates the need for supplemental relays or controls. The D-4990 Low Energy Operator (which incorporates the Heavy Duty D-4550 Best 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. Includes a 3/16 horsepower, permanent-magnet DC motor.

Warranty Information

2 Years Limited


  • ADA Compliant
  • Current Draw
    2A maximum (4 maximum number of operators per breaker)
  • Delay
    Hold Open Timer up to 28 Second Delay
  • Device Length
  • Grade
    Grade 1
  • Hand
  • Hold Open
  • Includes
    D-4990 Low Energy Operator, Standard Arm (PUSH side), Mounting template, Technical manual, Door closer spring adjustment wrench, Tuning screwdriver, Signs
  • Max. Door Weight
    350 lbs.
  • Mounting Location
    Push Side
  • Mounting Style
  • Output Current
    24VAC @ 0.125A maximum
  • Reveal
    6-5/8" Max
  • Standards
    ANSI/BHMA A156.19, UL 325, UL 228
  • Unit of Measure
  • Voltage
    115 VAC �15percent 60 Hz

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