Silkscreened on component side on top left hand edge.
overall: 1/2 in x 3 in x 2 1/4 in
This circuit board has "Delay Timer, teletype Shutoff" etched on the right hand edge on the component side. The components consist of transistors, resistors, capacitors, diodes and a 14 pin DIP. There is a 10 pin connector.