signaling device (noun)

1. In the cartoon, the character uses a signaling device to call for help.

2. Why did the scarecrow bring a signaling device to the farm? Because he wanted to call for 'corn' reinforcements!

3. The artist incorporated a signaling device into their sculpture to represent communication and connection.

4. In the futuristic sci-fi novel, the protagonist relies on a signaling device to communicate with aliens.