Spyder LON Programmable Controller, Unitary Applications, 24 Vac with a Valid Range of 20-30 Vac, -40-150 Degree Operating Temperature Range, I/O Count: 6 UI, 4 DI, 3 AO, 8 DO, Output Type: Relay DO's, Staged On/Off, Compatible with WEBs-AX and WEBs-N4 Interfaces, LonWorks Network Communications