Motion sensor light lights up during the day - Hardware & Accessories

Most likely the light sensor has stopped working. The light sensor creates voltage from light, like a small solar cell. If it quits producing voltage, the light system thinks it is dark.

adjust the lux sensor

There are settings on the sensor itself. Should be a dusk to dawn setting that will keep it off during those times and then function at night. as far as not working I would first suggest setting the sensitivity. Disrupting to power could have reset this.

When photo cell lights do not turn off during the day, this is more often than not an issue with the detector and or the relay module. Try climbing on a ladder and check if the lights module can be accessed with a small screw driver or pried open with a flathead tweeker. If you have a digital multimeter, look for where the module gets it power from. Normally the module is DC voltage, but depending on the manufacturer, nothing is normal. Also check for debris and the exterior lens (where the light strikes the sensor) is not weathered so back that it deflecting light. If it is dark, light cannot enter the sensor thus not allowing the unit to shut off.

Hope This Helps!

Is this security light the type with the built-in motion sensor?

If so, these also have a built-in photo-eye so that it does not come on during the day.

The photo-eye can go bad where the symptom is "on all the time"

Also some of the motion sensors have a chip inside that "locks on" if you flip the wall switch on and off three times quickly. Once "locked-on" I think you have to turn the wall switch off for at least 1 minute to reset.
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Original Launch X431 ICARD Scan Tool

usually motion sensor led lamp is a little different from general led lamp. the work condition will shift from general lighting to motion sensor light. The reason why installed, but can not turn off, might you install in the wrong way. You can see the installation details Pir Sensor Led Tube 4ft

the switch on this light is usually a photo cell it detects light when it sees darkness it sends a signal to the relay that turns on the light or its on a motion sensor if its only a motion sensor it needs a photo cell too maybe the photo cell is bad possibly the photo cell is bypassed test it by covering it does the light come on now uncover it does it go off

The motion sensor unit shorted to due to rainwater infiltration, if its like the last half-dozen motion sensor units I opened up. Take the unit down, open up the sensor unit head, and if its got moisture inside, you know why it quit. If not moisture, then they sometimes do what all electronic devices eventually do, they fail due to 1 of the components reaching its failure - every sensor has an MTBF
(mean time between failure).

Sounds like it