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Load Type
Incandescent / Halogen
Maximum # of Devices
2 Devices
110V AC
120V AC
220V AC
240V AC
277V AC
Ease of Installation
Advanced (Installs > 60 minutes)
Functional Devices
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Plug and Play Device Can Save Up To 50% of Lighting Energy Usage
Functional Devices HAF3 Half-Light 3-Stage Lighting Control, 5A
Functional Devices HAF3 Half-Light 3-Stage Lighting Control, 5A
Functional Devices HAF3 Half-Light 3-Stage Lighting Control, 5A
Item# 55905
Price: Normally $76.82 
Hot Deal $13.99
Free shipping on orders over $175 - See Details


  • Achieve three stages of lighting using a single switch
  • Controls two fixtures with one switch
  • Three stage operation: 50% light (ballast 1 only), 50% light (ballast 2 only) or full light (both ballasts)

Essential Info

Functional Devices' HAF2 gives combines convenience and energy savings in one simple device. This enclosed independent control allows you to choose two stages of operation from two ballast lighting systems. By connecting two independent fixtures through this controller you can choose 50% light from one ballast, 50% light from the other ballast, or full light (both ballasts) in addition to all off. These stages are all achieved using your standard wall switch, meaning you can achieve multiple stages of lighting without installing a second switch.

For a two stage version that activates one set ballast in 50% light mode, please see the Functional Devices HAF2.


What's Included

  • 1x - 3 stage ballast controller
  • Specifications

    Product Specs
    Input Power120 / 208-277 Vac
    Contact Ratings5 Amp Ballast @ 120-277 Vac
    5 Amp Incandescent @ 120 Vac
    Operating Temperature-30 to 140° F
    Humidity Range5 to 95% (non-condensing)
    Dimensions3.75" x 1.66" x 1.18"
    Weight0.20 lbs. (HAF2);0.24 lbs. (HAF3)
    Wire Length6.00"
    ApprovalsUL Listed, UL916, C-UL, CE Approved, RoHS

    Important notes:
    Only merchandise credit for defective items returned within 30 days of purchase. No other returns allowed on this item.
    Manufacturer contact information: Functional Devices Inc, Tel: (765) 883-5538


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