expired Posted by Meowssi | Staff • Feb 4, 2025
Feb 4, 2025 1:24 AM
Item 1 of 1
expired Posted by Meowssi | Staff • Feb 4, 2025
Feb 4, 2025 1:24 AM
6-Pack Uigos Plug-in LED Night Light w/ Dusk to Dawn Sensor
$6.00
$13
53% offAmazon
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Consume more power OFF than ON
Reviewed in the United States on December 4, 2023
I tested these with a multimeter and discovered that the electric current increased when the light turned off, rather than dropping to near 0, as I expected it would. Curious, I took one of the night lights apart and realized that in order to save some money on parts, they had simplified the design, consuming power in a dummy component when the light was supposed to be OFF rather than actually switching off the circuit. The ad suggests that the night light saves energy and only costs 20 cents to operate each year, but based on my measurements, it is more like several dollars per light. I am giving this product one star for a "bad" energy design, as it would have literally cost purchaser less to operate if the night light simply never turned off.
This product claims "Max 0.5W" but it's actual wattage is over 1W.
Actual wattage is 1.104W (9.2mA) when light is on and 1.128W (9.4mA) when light is off. This means electricity is re-routed to a circuit that wastes energy when it senses brightness. Apparently, this way costs less for the manufacturer. So, CAUTION: this night light does NOT save energy when the light is off.
If you leave one of these night lights plugged in all the time, annual electricity consumption will be about 9.78KWH (1.116W x 24h/day x 365days), not about 2.19KWH (0.5W x 12h/day x 365days).
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Our community has rated this post as helpful. If you agree, why not thank goodtimes92618
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At best I can only laugh at the burning house comments and I know idiots comes in every size and shape but as a person who like to see this place remains a clean place from insiders or trollers, I had to add these few lines. These turn off during day, even those indoor and in shadow(Unlike a lot of cheap imitations I have had in the past). Only at transitional time between day and night or when casting dense shadow on those that are in dark area of house, they may exhibit blinking but nothing that is bothersome and does end soon. No complain otherwise whatsoever.
I hope I didn't hurt anyone and btw I bought 3 extra sets (Yes discount coupon works on more than one, when bought together) just to have enough replacement or additional ones, as need may be.
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Source - I investigate fires.
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