Question 1

To replace the batteries, would I have to pull the entire unit off of the tape holding it onto the wall?  Or, is there a way to replace the batteries without removing the entire base from the wall?

Accepted Answer

Best install is to toss out the battery cover plate on the back side, as it is totally unnecessary waste of time when battery replacement is needed.  Then use a small strip of 3/4" wide velcro tape on back side above the battery compartment to fasten to the wall, allowing for a very fast and easy battery swap (though seldom needed).     (VELCRO Brand Thin Fasteners Tape 15' x 3/4" Tape - Clear)    Velcro tape holds well, but is easier to remove from walls if you decide to move the light.   FYI -  I have used the yellow sleep-friendly version (Mr. Beams MB720A)  in our halls and stairways for two years, mounted about 18 - 24" and they are fantastic.  Softer, warm glow, but still plenty of brightness for navigating halls and stairs.

Question 2

Do these lights have light sensors in addition to motion sensors? Would they turn on during the day when I walk by or they're on only at night? Thx.

Accepted Answer

I use as nite lights. unless it is pretty bright at the units location, they WILL come on during the day when motion detected. IE: my stairway upstairs gets some indirect light and sometimes the light comes on. those batteries last 5 months. the one in the bathroom gets no light and operates perfectly...OFF daylight, ON couple minutes nightime with motion..

Question 3

If I mounted this inside a window, facing outside, will it detect motion thru the window?

Accepted Answer

I bought one at a big box store to see how these work. Wife then wanted more of them. Battery lasts about two months or so in a four person environment going up an down stairs several times a day. Can be screw mounted to wall if desired. It should be able to detect motion on other side of Glass. However, the reflectivity of the glass where the light is mounted and how the photocell is positioned so as to not be defeated by the glas reflectivity. Might work better if the motion sensor is isolated in a 'tube' the is flush up to glass, so that the lamp reflection does not create a light difference in the inside of the window pane.

Question 4

We have two cats.  Do you think the cats will trip the sensor?

Accepted Answer

I have one mounted low by my stairs, and yes, the cats trip it. But the light is only on for a short time.

Manufacturer	Mr Beams
Part Number	MB722
Product Dimensions	27.94 x 22.86 x 10.16 cm; 0.28 g
Batteries	4 AA batteries required.
Item model number	MB 722
Finish	Waterproof
Material	Plastic
Power Source	Battery Powered
Voltage	110
Item Package Quantity	1
Type of Bulb	LED
Switch style	Touch
Special Features	Wireless
Batteries included?	No
Batteries Required?	Yes
Battery Cell Type	Alkaline
Item Weight	0.28 g

MB722 – LED Night Light with Motion Sensor to Battery, Placement Anywhere in, White

Description

Specifications

Common Questions