Two-slot rack. Central display rack. Terminal port. Cover for accessing the power supply terminals. 28 or 64 discrete I/O module, placed in first slot. Max additional I/O: 4 (28//32 channel), 2 (64 channel). Terminal connections (609-8514, 609-8520). HE10 connection (609-8536, 281-1975) Manufacturer Series = TSX 37 10 Supply Voltage = 24 V dc Output Type = Relay Number of Outputs = 12 Number of Inputs = 16 Display Included = Yes For Use With = TSX 37 10 Series Communication Port Type = Serial Expansion Available = Yes Mounting Type = DIN Rail