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Motion sensor lights are an important device to have installed outside of your home. Not only are they great for safety reasons, but they also work really well for outdoor events. If you have friends and family over and it gets dark out, everyone will be happy to be able to see the breezeway if they need to run inside to use the restroom or grab another drink. 

There are oftentimes different levels of sensitivity for the motion lights as well, that you can switch according to your specific needs. If there is no movement detected, the lights will turn off. 

When it comes to safety, motion sensor lights are your best bet. If you or a member of your family arrive home after dark, a light will make getting into the house so much safer. You will be able to see everything in your yard or driveway. Also, if an intruder is outside, you will be alerted by the light turning on. For these reasons, motion sensor lights are essential.

Even though well-made and high-quality lights are built to last, the technology is not always fool-proof. There is always the chance that something might break or not work correctly. One issue that is relatively common is when the motion sensor lights turn on and off repeatedly. Read on to find out how to solve this issue. 

What Causes Motion Sensor Lights to Turn On And Off?

In most cases, there are a few possibilities as to why your motion sensor lights might be turning on and off repeatedly. It can be related to the light itself, the circuit, the sensitivity of the sensor, or other electrical issues.

In most cases, you can resolve the issue on your own by following a few simple steps and trying a couple of different responses. If it is an issue related to the circuit, then you may have to call an electrician or handyman, or you can also contact the manufacturer or try exchanging the light.

Faulty wires, bulbs that do not work or are dead, and bad electrical connections are all reasons why your motion sensor lights might be turning on and off. If it is on a high sensitivity level, it may be detecting too much movement. 

What Steps Should I Take To Fix The Motion Sensor Lights?

There are three main things you should attempt when trying to fix motion sensor lights. We will discuss how to deal with each one.

  • Check if the lights are flashing or flickering (separate issues)
  • Adjust the motion sensor sensitivity, positions, and settings
  • Add side coverings to the sensor 

Flickering Lights

If the lights are flickering, it is a different issue than the lights flashing (turning on and off). Flickering lights can be caused by a dying or bad light bulb, a poor connection between the bulb and light fixture, or a variety of problems with the circuit. 

There are two ways to stop flickering lights. One is to change the lightbulb. This is the first step and will solve the problem a majority of the time. If the new light bulb does not resolve the flickering, the next step is to call an electrician to come and look at the circuit or simply try to exchange or warranty the device if possible, because there are a lot of things that can go wrong with it at times.

Adjust the Sensor

Many types of motion sensor lights have an adjustable setting. This allows you to adjust the sensitivity of the sensor to fit your needs. If the motion sensor is on the highest level of sensitivity, it may detect movement that does not come from humans or animals. Even bugs or wind might be triggering it. 

When a sensor detects heat in its view, that is when it triggers. If the settings are not correct or are not working properly, it can detect movement from cars, branches, and small creatures. Basically, things that should not be setting off the light. 

If your light has a range dial, adjust it and try it on different levels to see if that resolves the issue. Adjusting the sensitivity will change the range of distance in which the sensor can detect heat and movement. 

After adjusting the sensitivity, make sure you have the sensor in the exact area you need it. For example, If you have it facing too much towards the street, it will pick up the movements of cars.

Add Coverings to the Sides

All motion sensor lights have different angle ranges that tell you how big of a space the light will reach and detect motion in. If your range is too wide, it might go beyond the area that needs light. It could go off too far to one side where you have a lot of trees, resulting in the light going on and off with each movement of a tree branch. 

You can try using electrical tape to cover a certain amount of the sensor, which will prevent it from detecting any motion in that area. This is especially helpful if you have a specific spot you want the light to shine on. 

What Are the Best Motion Sensor Lights?

Investing in high-quality motion sensor lights will decrease your risk of running into faulty situations with the lights. Whether you need the lights for safety, recreation, or for any other reason, Boundery makes the best motion sensor lights available. 

The Boundery LumiGuard Pro is a LED light that provides 270-degree motion sensing. This light is ultra-bright and perfect for outdoor activities and gatherings. It is great for protecting your property or for putting it in the front or back yard of your house. It is solar-powered, which means you will never have to deal with charging it or changing its batteries. This simply improves its safety ability even more, because there will be no risk of it dying and not working when it gets dark.

There is also the Boundery LumiGuard NiteShield. This is the ultimate motion sensor light for safety and security. It is a sleek lighting device that fits onto the outside of your house, over your garage, gardens, porches, and any other outdoor element. It is completely waterproof and can withstand bad weather, giving you peace of mind. 

It has LED lights that turn on as the sun sets, providing a soft glow, and has 20 LED lights that shine bright as it gets darker. It is also a solar-powered device that fully charges during the day, even if it is cloudy or raining. After charging, the battery is ready to work all night long. 

For indoor safety and convenience, try the Boundery Motion Sensor LED Light Bulb. Perfect for basements, attics, and laundry rooms, it turns on automatically when motion is detected and shuts off when there is no movement. It helps to illuminate dark corners and rooms in your home. It can also be used in garages, driveways, and back alleys. 


There are a few reasons why your motion sensor lights are turning on and off repeatedly. It could have to do with the light bulb, the circuit, or having the wrong setting on your motion sensor lights. 

You should first try and change the lightbulb to see if that helps. If not, you can try and change the setting on your motion sensor lights, making it more or less sensitive. Finally, you can try to warranty the device, exchange it, or call an electrician to look at the circuit and make sure there are no issues with it.

For the best motion sensor lights available, Boundery has a great selection. Whether you need outdoor lights for gatherings, weatherproof, ultra-bright lights for security, or light bulbs for indoor use in dark spaces, there is a product to suit your needs. 


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