DC Jack female connector 5.5/2.1mm with terminal block for loose wires

Power Jack female connector 5.5/2.5mm screw terminal block.
Connects loose wires.

BNC male connector extends through the two screw clamps.

DB9 male connector
RS232 with 9 pins and screw terminals. RS232 / 485/422
D-SUB 9pin
3 x 4.7 x 1.8 cm (4.7 cm from the front of the DB9 connector to the back of the PCB)

2-pole screw terminal block
2EDGE 5.08mm
Suitable for industrial or embedded PCs