The DCS-11 is a cable harness which provides two-way audio, DI/DO, reset button, Video Out, 12 V/DC in and 24 V/AC in on compatible cameras. Protection and Warranty: Purchases are protected by a 5-year manufacturer’s limited warranty. Please contact D-Link directly for support and warranty needs. Website: https://support.dlink.com/ Email: rma_requests@dlink.com Phone: 877-354-6555 (24 hour support line) Note: Observint will offer NO TECH SUPPORT/WARRANTY for D-Link Products