4 helpful Ways To Stop a Motion Sensor Light From Turning Off Written

You can save a lot of energy in your home, place of business, or school by installing motion sensor-controlled lighting. Additionally, they can be really unpleasant because they often stop working if you don’t move around enough. Is it possible to prevent the lights on motion sensors from shutting off?

The following 4 methods will prevent a motion sensor light from going off:

  • Quickly switch the light on and off again.
  • Change the sensitivity of the motion sensor.
  • evade the motion detector.
  • Have a trained specialist tweak the motion sensors.

This post will look at how to prevent lights controlled by motion sensors from turning off. But first, let’s quickly go over how motion sensors function.


How Motion Sensors Work

Commercially available motion sensor lights employ one of three different types of motion sensors:

Passive Infrared

Every object that has a temperature greater than absolute zero (0 K, -273.15 °C, -459.67 °F, 0 °R) continuously emits electromagnetic radiation to release surplus energy. Normal conditions prevent the human eye from seeing this radiation. But electronic instruments can detect it. Most of the things we come into contact with, including people, release excess energy in the form of infrared radiation (IR), also referred to as “heat.”

Between 700 nm and 1 mm in wavelength, infrared radiation is present (2.75591e-5 in and 0.04 in). The temperature of objects in their range of view is continuously monitored by passive infrared sensors (PIR), also known as “passive infrared detectors” (PID), which use a camera with a lens that is opaque to visible light.

The camera “sees” anything emitting at a temperature higher than ambient temperature. Any heat sources that are warmer than room temperature are tracked by a microprocessor that is connected to the PIR. The microcomputer activates the light if those objects move to a degree that is greater than a predetermined threshold.


There’s a chance that motion detector lights in the same room as you are irradiating you with microwave radiation, which may frighten some readers of this page. However, as long as you are outside of a microwave oven, microwave radiation (1 mm to 1 m or 2.75591e-5 to 0.04 inch in wavelength) is totally safe for people to be exposed to.A steady beam of microwaves is emitted into the field of view of microwave motion sensors.

They search for microwaves that have been reflected using a unique kind of camera. The Doppler Effect allows for the detection of motion. Similar to PIR sensors, a microcomputer continuously scans the sensor’s range of vision for movement. If it detects movement that exceeds a certain threshold, it activates the light.


Passive infrared and microwave motion detectors are combined in hybrid motion detectors. They are most frequently employed outside, where atmospheric conditions could make either less effective.

How To Stop Motion Sensor Lights From Turning Off

Motion detector lights are a rather straightforward device. They can experience certain problems, but there are a few ways to alter how they perform.

1. Turn the Light Off and On Again Very Quickly

Turning off and rapidly shutting on motion detector lights is the simplest technique to prevent them from turning off. The majority of contemporary motion-activated lights are programmed or built to recognise this as an override instruction. It merely resets the timer in motion sensor lights that are older.

2. Adjust the Motion Sensor Sensitivity

There are detection thresholds on the microcomputers that keep an eye on the sensors in motion sensor lights. The microcomputer must detect a particular amount of motion before turning on the light. Most motion detection lights also allow users to change that quantity. The majority of commercially marketed motion sensor lights offer sensitivity controls. Users may now choose how much movement is necessary to turn on the light.

The motion sensor will be configured to respond to tiny movements, such as those of a human sitting at their computer or a small animal in their yard, if the sensitivity is increased. The majority of devices either use a dial or a slider as part of the actual process for altering the motion sensor sensitivity. Modern “smart” motion sensor lights frequently allow for adjustment through an app.

The technique should be described in the owner’s manual for your specific model. It will take some trial and error to get the sensitivity just right. The sensitivity must be adjusted up and down until you find a setting you like.

Be aware that if the sensitivity is set too high, the light may not turn off until it is turned off.

3. Bypass the Motion Sensor

Although it tests the bounds of do-it-yourself, it is possible to entirely disable the motion sensor in your motion sensor light. Your lights’ warranty will undoubtedly be voided if you do this. Additionally, you have a higher chance of damaging your lights if you don’t know what you’re doing. In most motion sensor light fixtures, the motion sensors are not connected directly to the circuit that powers the lights. Instead, a relay that regulates the power to the lights is attached to them. Relays are electrical switches that are activated by electrical signals.

4. Have the Motion Sensors Adjusted by a Qualified Professional
4. Have the Motion Sensors Adjusted by a Qualified Professional

The light fixture is normally in the “on” position when it is switched on. The relay must be triggered by a signal from the motion detector in order to turn off the light. You must place a switch between the motion sensor and the relay in the sub-circuit of a motion sensor light in order to disable the motion sensor. This can be another light switch or a toggle switch. Signals from the motion sensor are not received while the new switch is in the off position. Your motion sensor light fixture will function as a typical light source as a result. Please refer to the circuit diagram for that model of light fixture before attempting to disable the motion sensor. Online resources provide circuit schematics with a broader scope.

4. Have the Motion Sensors Adjusted by a Qualified Professional

Most people who are dissatisfied with the functioning of their motion sensor lights will find that having them installed or adjusted by a trained professional is the best course of action. Most frequently, this entails contacting an electrician or a home security expert.

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