Security lighting can be an inexpensive criminal deterrent for your home. It is an automated lighting system that generally uses either a motion detector or a timer to control when the lights come on and off.
The system makes it appear that you are home while you are away and can also deter trespassers who prefer darkness when trying to break in.
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Sometimes, a light can malfunction and stay on when it shouldn't. This is normally an easy fix.
Troubleshooting Security Lights
If a security light is not turning off the way it is supposed to, you can reset many systems by toggling the power switch "on" and "off". This should reboot the motion sensor or the timer and you can readjust it to your liking.
If the light has a motion sensor, check the area around the sensor to make sure it doesn't have something stuck in it that is causing the sensor to consistently trigger the light.
Wipe down the lights and sensors with a soft cloth and a small amount of water to remove any dust or debris. If the sensor is covered by something, the fixture could register it as night all the time and leave the light on.
Another option is shutting off the breaker that the light is hooked up to. Only do this if the breaker being shut off is not vital for anything else in the home.
If nothing else is working, try switching out the bulb. This is an unlikely fix, but it is worth trying before reinstalling the light. Make sure the wattage of the bulb is compatible with the system recommendations. You also don't want a light that is too bright, because that can aid a criminal in providing visibility for him.
If all else fails, reinstall the light or replace the fixture outright as you may have a faulty system.