A Home That Reacts

In the picture

1. 1A motion sensor: detects movement in the room.
2. 2A temperature sensor: measures how warm or cool the air is.
3. 3A controller hub: receives sensor signals and decides which devices should react.
4. 4A lamp: turns on or off when the controller sends a command.
5. 5A radiator: adjusts its heat output when the controller sends a command.

Examples

• A hallway light switches on when you walk past a motion sensor.
• A thermostat lowers the heating when the room is already warm.

Quiz: A Home That Reacts (Age 14)

1. 1

   What is the main job of sensors in a home automation system?

   • They decide which devices should react.
   • They send commands directly to the devices.
   • They gather information from the home environment.
2. 2

   What does the controller do with the signals it receives from sensors?

   • It measures the air temperature itself.
   • It turns the sensor information into commands for actuators.
   • It blocks the signals so devices stay unchanged.
3. 3

   Which part receives sensor signals and decides which devices should react?

   • A motion sensor
   • A radiator
   • A controller hub

The answers, each with its explanation, are in the app. This lesson has left the free week, so its quiz is part of the subscription.