This is an Optimus 2 Channel Professionsl Wireless Audio Link System from Radio Shack, model 32-1235. It comes as shown, with receiver, power supply, transmitter, lapel microphone, and an RCA to 1/4" audio cable that plugs into the Line output jack.
This set has been tested, and it works fine. I tested it by running a cable with a 1/4 inch to 1/8 inch adapter from the audio output jack to the microphone in on my laptop, and successfully recorded my voice through the unit into Audacity, the free and open audio editor and recorder.
The set has some cosmetic wear from normal usage. See pictures for details. The transmitter requires a 9 volt battery (not included). The instruction manual for this device can still be freely downloaded in PDF format directly from Radio Shack.
Accepted payment methods are:
Money Orders and Cashier's Checks
Personal Checks (expect a hold of up to 10 business days for clearing)