The man is holding a phone against a wall, with a green light glowing from the bottom of the phone.

A man is demonstrating how to use a Walabot DIY 2M stud finder to locate studs and electrical wires behind a wall. He first shows how to hide TV cables by drilling a hole and inserting a receptacle. Then, he uses the Walabot device on his phone to scan the wall, first identifying a stud and then detecting electrical wires. Finally, he uses the device to locate electrical wires behind a light switch, and then shows how to feed a wire through the wall and connect it to the receptacle.