Question

1. this pair of garage door sensors:

options:

• are positioned too close together
• are positioned correctly
• should be powered by larger gauge wiring
• should be pointing at the garage door
• should be positioned on either side of the door

Explanation:

Garage door sensors (photo - eye sensors) typically work by having one sensor on each side of the garage door opening, aligned to detect the beam. In the given image, the sensors are on the same side, so they should be positioned on either side of the door for proper operation (to detect if an object is in the door's path). Option A: Proximity isn't the main issue here. Option B: They aren't positioned correctly as they are on the same side. Option C: Wiring gauge isn't indicated as a problem from the image. Option D: They don't need to point at the door but across the opening. So the correct answer is the one about positioning on either side.

Answer:

E. Should be positioned on either side of the door