Hello, I am trying to make a small keyfob type wireless relay that will connect to a headphone jack to cut out the audio when the button on the keyfob is pressed. Has anyone ever seen one of these or have a place where I can look to build one from scratch. Thank you for your time.

 

Sure.. There are TONS of keyfob controlled relay modules on ebay (starting at only a couple dollars and going way up based on complexity/need,etc..). Just use it to disconnect one lead of the jack.

 

But don't those relays have a output voltage?

EDIT: Also I cannot buy things off of EBay.

 

A relay requires power on the "coil" side and then can switch signals (like an audio signal if needed or a light/motor,etc..) on the "contact" side. They are "dry" contacts in that no voltage is present ..ie no output voltage using your terms.

 

I guess this is what I am looking for, but either I need to build it from scratch or somehow find a nonebay location.

http://www.ebay.com/itm/Wireless-Switch-2CH-Momentary-Remote-Keyfob-Relay-Receiver-/290807111051?pt=LH_DefaultDomain_0&hash=item43b5745d8b

 

It is a little more money obviously, but it is made in the US and I can buy it, here is the link: http://www.relaycontrollers.com/Relay/Device/KLRR15_USB

 

Is amazon or any of the other hundreds of sites on the internet that carry these out of the question too?
No need to spend over $20 USD for your needs.

 

I work for the Navy and they have strict buying requirements.