This item is out of stock, but its components may be readily available in our warehouse. Contact us to see how we can help! NXT-MSC 4D Mercury Powered NXT Controller (NXT-4D-MSC) Keri Systems Now: $1,999.00 Was: Keri Systems has partnered with Mercury Security to bring enhanced capabilities to its Doors.NET customers that use the NXT hardware platform of TCP/IP-based controllers. By embedding Mercury... KERI-NXT-4D-MSC Now: $1,999.00 Was: This item is out of stock, but its components may be readily available in our warehouse. Contact us to see how we can help! Qty in Cart: 0 Price: Now: $1,999.00 Was: Subtotal: This item is out of stock, but its components may be readily available in our warehouse. Contact us to see how we can help!