Check the listing for details. Hotronic AR31 Remote Required for AR31 AR-31 TBC Proc Amp Time Base Corrector. Condition: Open box. Listed at 164.99 USD. The Hotronic AR31 is a great time base corrector / frame sync. Unfortunately, it requires a remote control to access all functions. This remote was sold as optional but is needed to change from composite to s-video or access proc amp controls. The cord is approx. 3ft. This remote is for those who have obtained an AR-31 but don't have the remote for it, or sellers looking to test their equipment or add value when selling it. It's a heavily modified remote that's been made to work with the AR-31 and has been fully tested. Please look at the pictures for the label quality, it's just a printed label to allow you to know which functions are there but is not as nice as the OEM label. If that bothers you, don't purchase this item. The remote allows you to: Change Video Signal Strength Change Chroma Levels Change Hue Change Set Up (black levels / IRE) Freeze Frame Freeze Field Strobe Effect Horizonal Phase SC Phase (aka chroma phase) Composite / YC (input selection) Preset (reset to defaults or preset) Lock / Unlock (for controls) If you have any questions, please reach out to me before purchase. I'm making these because I was unable to find any for sale they seem to get lost all the time. The cost is reflective of the time to make, raw materials, and time spent reverse engineering an existing Hotronic remote.