The Moog 994 is a very simple 1U module consisting of eight jacks.
The Moog description of this module is:
The dual multiple panel consists of two sets of four phone jacks. Each set of jacks has been wired together: tip to tip, sleeve to sleeve.
The multiple is a "device" which permits multiple distribution of one signal to several different places. This process is often called signal splitting. Multiples are used for many purposes; from linking two patch cords together, sending a single signal to several different modules at the same time, to doubling or trebling the amplitude of a signal by sending it X3 to a particular source.
The serial label is glued to the back of the panel.