Check the listing for details. Sigma Electronics SLX 161 Video Audio 16 Channel Switcher BNC Input Rack Mount. Condition: For parts or not working. Listed at 69.95 USD. Sigma Electronics SLX-161 Video Audio 16 Channel SwitcherPart Number: SLX-161Series Number: SLX Item is pre-owned and WILL show signs of previous usage.Item is being sold AS IS and FOR PARTS ONLY due to the unknown full working condition of it. This item has been powered on and appears to be in working condition.Extensive testing of all functions has NOT been done. Retired from a local university. Domestic shipping is available via the USPS or UPS ground. International shipping is available via USPS Priority International, or the GSP. Feedback is left automatically by the system upon you leaving feedback for us. Please be sure to ask any questions BEFORE making your purchase. There will be no returns accepted on this unit. No exceptions.