Better than the timer, better than the comings and goings, the automatic switch triggers the lighting at your passage then turns it off a few moments later. It is a switch with an infrared sensor that detects the slightest movement up to 8m. It triggers lighting and cutting when the activity stops (after a few seconds or up to several minutes). In this example, an automatic switch comes to replace a back and forth.
Replacing a conventional switch with a presence detector is useful in a passageway such as the entrance or the corridor. You will choose a two-wire (phase and lamp return) or three-wire (with neutral) detector depending on the current switch.
The principle of an electrical assembly with an infrared motion detector
Before approaching the technique, I must explain the interest of using an infrared motion detector outdoors, even if it seems obvious.
A simple conventional ignition consists of a switch and a light point. Without any action on your part, the light point does not come on.
If you put a spotlight outside, you will need to operate the switch to turn on the outdoor lighting.
Here are some arguments that will undoubtedly make you understand the usefulness of the infrared motion detector :
- If you enter your home (you are outside), you will have no way to turn on the outside lights.
- If you are waiting for people, your lighting will work permanently while waiting for guests.
The motion detector will act in your place and turn on the light point (s) outdoors to solve the two problems mentioned above.
Infrared motion detector, operation:
As I explained above, the motion detector acts in your place: It thus takes the role of the automatic switch to control the lighting.
Infrared motion detector technology:
The technology used by motion detectors is based on infrared radiation. (noted IR as Infra Rouge)
Simply put, infrared radiation is a “kind of light” that is emitted by bodies or objects, but is not visible to the naked eye.
The motion detectors distinguish these radiations (even at night) and thus make it possible to locate a body or an object that emits IR radiation.
Unscrew the old switch.
Prepare the wires
Cut the ends of the wires and strip them if necessary about 5 mm with a wire stripper.
Connect the wires to the new mechanism. Depending on the model, it is a screw terminal block or an automatic connection. Carefully follow the manufacturer’s installation diagram.
Screw the switchgear onto the flush-mounting box and then adjust the presence detector (lighting time, light intensity, and trip distance) according to the instructions in the operating instructions. Secure the plate.