The CB-37F-HVD features screw terminal connectivity for up to 37 I/O signals, 12 to 30 AWG. It has a female 37-pin D-SUB connector for connectivity to C Series I/O Modules and data acquisition devices. The CB-37F-VHD is UL recognized. You can use the CB-37F-VHD with low-voltage or high-voltage products up to 150 V.