Humidity Sensor?

Looking for a Humidity sensor controller that I can tie into the QS system for CA. bath fan requirements. Any Ideas?

Kevin

You can use a third party humidity sensor that provides a contact closure output and wire it to the back CCI of a keypad, a QSE-IO, or a VCRX in order to have the programmign to turn on the fan.

That's what I was figuring but am having a hard time finding a sensor. Anyone have a line on a sensor?

Thanks for the help.