Why a sensor for LED lighting?
LED lighting with a sensor automatically turns on when needed and off when not. This saves energy, increases safety, and provides comfort. No more searching for a switch in the dark. The light detects motion or light and switches on automatically. Ideal for outdoor lighting, garages, storage areas, and other places where you often walk around with your hands full.
PIR sensor: infrared motion detection
A PIR sensor detects heat from moving objects. As soon as someone or an animal enters the detection area, the light turns on. The sensor responds to temperature changes, not just movement. Therefore, PIR works well for people and animals, but not for cars or objects without heat. The range is typically 5 to 12 meters with an angle of 120 to 180 degrees.
Motion detector: active detection
A motion detector uses microwaves or ultrasound and detects any movement, even from objects without heat. These sensors are more sensitive than PIR and can detect through materials. A disadvantage is that they can also react to wind, moving branches, or small animals. PIR is often more reliable for outdoor lighting; for indoor use, a motion detector may be more practical.
Twilight switch: light detection
A twilight switch measures ambient light. As soon as it gets dark enough, the light turns on. It turns off when there's sufficient daylight. This isn't motion detection, but light detection. You often see a combination: a twilight switch ensures the light is only active at night, while PIR ensures it only comes on when motion is detected. This way, the light doesn't stay on all night, but only when someone walks by.
Combination for optimal results
The best LED outdoor lighting with a sensor combines a twilight sensor and PIR sensor. During the day, the light stays off, even when motion is detected. As soon as it gets dark, the twilight sensor activates the PIR sensor. When motion is detected, the light turns on for an adjustable time, usually from 30 seconds to 5 minutes. No more motion? The light turns off. This maximizes energy savings and provides light exactly when you need it.
Adjustment options and range
Good sensor lights have adjustable sensitivity, duration, and brightness. You can adjust the detection range so the light doesn't respond to people on the street, but does respond to movement in your garden. You determine the duration yourself: short for a passageway, longer for a work area. Some lights also have a permanent-on setting, useful if you temporarily don't want the sensor on.
Placement for best results
Mount sensor lights at a height of 2 to 3 meters for optimal range. Avoid pointing the sensor at heat sources such as radiators or air conditioners, as this can cause false detections. For outdoor lighting: point the sensor at the area you want to illuminate, not at the street or neighbors. After installation, test whether the light responds as desired and adjust the settings until it works perfectly.
