Hi, I've bought a L510B and it omits a high pitched sound which is audible up to 10 feet away. The sound is present even when the bulb is off so I guess it is related to the wifi components. I'm just...

@Hugh630 Sounds like you have a duff one, I'd send it back. May I ask you a question? I have bought a similar bulb and I find that it omits a high pitched noise I can hear up to 10 feet away, even...