Anakin got the message and reached out with his mind. He'd been practicing focusing on pinpointing one component of a device so he could disrupt or trigger its function.
He found the buzzer easily, as if he could see it or touch it - machines were alive in his mind.
And all he had to do was nudge that buzzer trigger-
The obnoxiou sound emitted from the voice box and the door clicked, signalling that anyone could get it.