Mr Beams® Wireless Motion Sensor LED Slim Task Light

7 reviews Write a Review
35 Lumens
Battery Powered
Motion Activated

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Instant Light for Important Tasks

Mr Beams Slim Task Light provides bright, battery-powered light nearly anywhere to instant convenience. Get motion-activated task lighting for kitchen counters, work benches, closets, utility rooms and shelves in less than 5 minutes. The wireless light, which is about the size of a smartphone, easily installs under cabinets and shelves.


Battery Life

1 year (at 8 activations per day)

LED Color

Neutral white (4000k)

Installation Skill Level


Auto Shut Off

Turns off automatically if no motion is detected after 20 or 60 seconds.


0.2 lbs


2.44" H x 4.33" W x 0.87" D

Model Number(s)

MB850, MB860

User Manual


  • 35 lumens cover up to 10 square feet
  • Motion activated from 7 feet with 120 degrees angle of detection
  • 20 or 60-second auto shut off to help prolong battery life
  • Wireless installation takes less than 5 minutes with the included double-sided adhesive or mounting hardware
  • 4 AA-cell batteries provide 1 year of light with average use of 8 activations a day (batteries not included)
  • Included motion sensor cover helps decrease motion-sensing range to prevent unwanted activations

Bright LED Light

The automatic task light’s bright 35-lumen output that covers 10 square feet adds safety and convenience around the home. The housing design provides an open beam, making it ideal for counters, cabinets and shelves.

Motion Activated with Auto Shut Off

The motion-sensing under cabinet light activates when it detects motion from 7 feet away and automatically shuts off after 20 or 60 seconds of no motion to conserve battery life. Expect about 1 year of light on each set of batteries with average use of 8-10 activation a day.

Wireless Installation

Install the battery-powered task light nearly anywhere to added convenience around the home, including kitchens, cupboards, counters, cabinets, closets, work benches and shelves. Simply insert batteries and mount to the desired location with the included mounting hardware or double-sided adhesive. Watch the video to learn more.

See More Under Cabinet Lights

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  • 1
    Under Counter Lights

    Deke Skinner

    I ordered 4 of these lights and one will only stay on all the time regardless of the timer.

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  • 5
    Nice Under cabinet lights


    These lights are nicely made and easy to install. I like the light quality as well. Nice job, Mr. Beams.

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  • 5
    The Price is Right For What They Deliver

    D. Olive

    They were very easy to install under my kitchen cabinets and give off the right amount of light for my tasks. My only complaint is that they don't stay on long enough and I have to keep waving to set off the motion detector when longer use is needed. They are about right for what they cost, a good product.
    When a relative came to visit she liked what she saw and asked me to order two for her, so I am.

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  • 4


    Limited instructions. Ordered eight and two do not work.

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  • 5


    So easy to install, works great in the closets with high ceiling and the cupboards too. Works exactly as advertised. We just bought some rechargeable batteries and now we have light only when we need it. perfect!

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  • 4
    Quality product, but doesn't function as advertised.


    VERY Disappointed with these lights! They will only turn on when the area/room is dark and the sensor works from about 1-2" away, not up to 7 ft. Even if set to turn off @ 60 sec. if no motion is detected, they just turn off. Regardless if there is motion near them or not. Seems to be a timed shut off, not a sensor thing. Do not purchase these if you're looking for additional lighting, only if you want light in an area that is dark.

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  • 5
    Great Under Cabinet Light


    Love these new lights!! We previously bought LED lights from Costco and were very disappointed. The lighting was weak, the sensor sensitivity was inconsistent and we were constantly changing batteries.
    We installed our new Mr Beams lights under our cabinets and they work great. Right when you walk up to the counter they turn on quickly illuminate the entire countertop.
    Thanks for the great product!

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