Check the listing for details. Kelmar Systems Inc Sync Slector Module Theater Theatre Auditoriums 8527-6. Condition: For parts or not working. Listed at 100.00 USD. Kelmar Systems Inc Sync Slector Module Theater Theatre Auditoriums 8527-6 GENERAL- where more than 3 Auditoriums are to be interlocked, a SYNC SELECTOR MODULE Is available to provide Multiple path interlock selection. The #8527-6 SYNC SELECTOR MODULE is used to Interlock up to 6 Automation Systems and the Selector modules may be paralleled to provide control of any number of auditoriums. By purchasing this item you do hereby acknowledge that you are familiar with the proper operation and safety precautions and will fully follow the manufacturer's recommended instructions for the safe and proper use of this item. To my customers, please note your satisfaction is very important to me, if there is any reason you can not give us the best possible rating and positive feedback, please contact me through eBay so the issue can be resolved. We only ship to paypal verified addresses, please do not ask us to ship to a different address