Teletype Incloming Line Unit 4702 system building block
Digital Equipment Corporation (DEC)
Printed on the solder side and on the face of the aluminum frame
Stamped into the side of the frame
overall: 1/2 in x 4 1/2 in x 14 in
The module consists of a printed circuit board with various components, surrounded by an aluminum frame and Blue plasic 22 pin connector. At the end of the board opposite the connector there is a single micro switch.