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Connector Type
USB Connectors
Personal A/V Type
Battery Charger
Cell Phone Charger
iPod Charger
Receptacle Type
Single Receptacle
LED Feedback
Tamper Resistant
# of Outlets
1 Outlet
# of Ports
2 Ports
Trim Plate Design
Decora / Paddle
Maximum Load
15 Amps
110V AC
120V AC
Ease of Installation
Intermediate (Installs < 60 minutes)
Cooper Wiring Devices
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4th of July

A Permanent and Energy Efficient Alternative to Bulky USB Adapters
Cooper Wiring Devices TR7740-BK USB Charger with Tamper Resistant Receptacle - Black
Cooper Wiring Devices TR7740-BK USB Charger with Tamper Resistant Receptacle - Black
Cooper Wiring Devices TR7740-BK USB Charger with Tamper Resistant Receptacle - Black
Item# 21675BK
Price: Normally $29.99 
Hot Deal $11.25
Free shipping on orders over $175 - See Details


  • 2-pole, 3-wire grounding
  • Replaces standard duplex receptacle units
  • LED indicator lets you know your device is charging
  • Durable and corrosion-resistant design
  • Built-in wire strippers and tri-combo screws

Essential Info

With this in-wall combination USB charger and tamper resistant receptacle unit, you’ll be able to charge portable electronic devices directly from a wall outlet. All you will need is a USB cable to connect to the one of two USB ports on this unit. This energy-efficient unit uses less energy than traditional chargers, leading to savings of up to $31 per year in electricity costs. In addition to the USB ports, this unit also features one standard AC electrical outlet. Equipped with UL approved tamper resistant shutters, this unit complies with the 2011 NEC Article 406.12 requirement.

Any standard duplex receptacle can be replaced with this unit in minutes. Constructed with injection-molded housing, PVC resin, and a zinc-plated steel mounting strap, this combination receptacle was designed to be durable and corrosion resistant. An automatic grounding system eliminates the need for a bonding jumper in grounded metal enclosure. Triple wipe blade contacts and double wipe ground contacts also allow for long-term plug retention and can withstand regular use.

This product is also available in Almond, Ivory, Light Almond, and White, each sold separately.

What's Included

  • 1x - USB Charger with Tamper Resistant Receptacle
  • Mounting screws

  • Specifications

    ManufacturerCooper Wiring Devices
    Manufacturer Product No.TR7740-BK
    5 VDC
    Wiring TypeBack & side wire
    Testing & Code CompliancecULus Listed UL 498 and UL 1310
    FlammabilityMeets UL 94 requirements;V5 rated
    Temperature Rating-4 to 140 degrees F (20 to 60 degrees C)
    Electrical (AC Output)
    Dielectric Voltage Receptacle withstands 2000V per UL 498
    Temperature RiseReceptacle - max. 86 degrees F (30 degrees C) after 100 cycles of overload @ 150% of rated current (DC)
    Electrical (DC Output)
    Switching FrequencyTypical 66kHz
    Output VoltageNominal 5V (+/- 10%)
    ProtectionCurrent limiting and Thermal shutdown
    Output CurrentConstant current maximum 700mA
    Base Device Terminal Accommodation#14 - #12 AWG
    Voltage RatingsPermanently marked on device
    Strap0.045' thick steel, zinc plated
    Auto Ground ClipPhosphor Bronze
    Line Contacts0.030' thick triple wipe brass
    Ground Contact0.030" thick double wipe brass
    Terminal Screws#8-32 steel, brass-plated;neutral screw nickel plated
    Ground Screw#8-32 steel, zinc plated, green
    Tamper ResistantReliable Delrin shutter assembly
    Important notes:
    Defective exchanges for identical item within 30 days of purchase. After 30 days, please contact the manufacturer.
    Manufacturer contact information: Cooper Wiring Devices, Tel: (866) 853-4293 Ext 3


    21 Ratings
    5 star: 67%  (14)
    4 star: 19%  (4)
    3 star: 14%  (3)
    2 star: 0%  (0)
    1 star: 0%  (0)
    Average Customer Rating
    (21 customer ratings)
    Share your thoughts with other customers
    HERBERT -- chicago, IL   8/1/2013
    It works . . . that's all that is necessary.
    KEVIN -- rockville centre, NY   2/20/2013
    Great.. No more chargers taking up space in outlet .. Love it. ..
    PETER -- capistrano beach, CA   2/17/2013
    This outlet makes life MUCH easier! We need to add a few more around the house!
    MARK -- boulder, CO   1/20/2013
    Easy install, relegate the transformer to travel duty.
    JOHN -- acton, CA   8/26/2012
    Very good product. Worked with Ipad II and III and Iphones. They tend to be pickey. Easy install with steak screws. Looks nice. I'm Going to get one for every bed room and the office! works great! Thanks
    Tim -- Louisville   6/4/2012
    Just re-did the kitchen and put in 2 of these. Very convenient. It will recharge an iPad 3 but takes a little longer than the stock charger.
    ANTONIO -- peachland, BC   5/24/2012
    It has been charging all our devices the same way each individual charger was doing without the need of different and bulky chargers.
    JEFF -- high point, NC   4/27/2012
    Great in the kitchen to eliminate all the chargers...VERY pleased!
    TUAN THANH C -- phoenix, AZ   4/23/2012
    Very convenient outlet with a small footprint. Please be aware this will not supply enough power to charge the iPad. Very poor packaging from Smarthome in unpadded manilla envelop.
    SANFORD J. -- seattle, WA   4/22/2012
    Great product to eliminate the wall warts for charging USB devices. Also this allows for charging two devices while leaving a regular outlet for another use.
    DAVID -- newcastle, CA   4/13/2012
    Easy to install, very useful product, removes the need for bulky power adapters and maximizes the use of space. Highly recommend.
    DOMENIC -- kansas city, MO   3/30/2012
    As advertised, best price I found, and quick delivery. Process was seamless and painless. I am impressed with their service.
    RODNEY -- orem, UT   2/23/2012
    Why didn't these come out 5 years ago!? Great device, 700mA is more than enough to charge my gadgets. Clean and modern looking unlike others where the USB ports looks like an afterthought. Bought two more. One for each desk in the house and one for kitchen counter. No more bulky adapters! Love these things!
    JONATHAN -- new kensington, PA   2/21/2012
    I give it 4 stars only cause the device is a little big inside an metal old work box. I wrap elec. tape around devices. had a real hard time getting the device in the box w/ tape on it had to cut tape. but works great !
    ANDREW J. -- columbus, NJ   2/16/2012
    Some of my I devices won't charge on it. 2 iPod 4s and iPhone 4 my iPad 2 and 4s also lg phones work great
    OMAR -- miami, FL   2/9/2012
    This outlet works fine. The only con I found is that it does not include the cover plate.
    BENJAMIN -- hopkinton, NH   1/1/2012
    A very clever idea that saves me from having a bunch of "wall wart" transformers hanging off my outlets. I put in two of these where the family uses their iPods and they use them all the time.

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