Home Automation

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1. In home automation, what is the purpose of a 4-channel relay?

• a) To manage multiple electrical devices remotely
• b) To control the home's temperature
• c) To predict household activities
• d) To create a musical atmosphere

2. How does a Bluetooth module contribute to home automation using Arduino?

• a) By predicting Bluetooth device locations
• b) By controlling the home's lighting
• c) By enabling wireless communication between the Arduino and a smartphone
• d) By changing the color of Bluetooth devices

3. How does the Bluetooth module allow smartphone control in home automation?

• a) By predicting smartphone battery levels
• b) By establishing a wireless connection between the smartphone and the Arduino
• c) By controlling the smartphone's screen brightness
• d) By changing the smartphone's language

4. What's the benefit of using Bluetooth technology in home automation?

• a) Predicting Bluetooth device movements
• b) Providing an affordable and convenient wireless control interface
• c) Changing the color of Bluetooth devices
• d) Controlling the moon's phases

5. What's the significance of using a 4-channel relay in home automation as opposed to a single-channel relay?

• a) To predict relay channel failures
• b) To increase power consumption
• c) To control multiple devices independently with a single Arduino
• d) To change the relay's shape

6. How can a smartphone user send commands to the Arduino using the Bluetooth module?

• a) By predicting the Arduino's commands
• b) By using telepathy
• c) By changing the smartphone's screen resolution
• d) By sending specific signals from a smartphone app to the Bluetooth module