Temperature sensors: They detect the change in the temperature and adjusts to them.
Light: The light sensor enables a robot to detect light. Robots can be programmed to have a specific reaction if a certain amount of light is detected.

Water-Level sensor: Water level sensors detect the level of water that flows. The measurement can either be continuous or can be in point values.
Movement sensors: The movement or motion sensors detect an intruder inside houses or they check if there is any movement. If there is then alarms are sounded.

Light bulb actuators: Creates light
Heater actuators: Increases temperature.
Cooling unit actuators: Decreases temperature.