Superman, Aquaman and Wonder Woman looking at the Justice League Monitor.[1]

The Justice League Monitor was the Justice League Computer screen in the Hall of Justice that allowed the Superfriends to send and receive televised transmissions.

The Trouble Alert could instantly transmit video images recorded by the Justice League Satellite directly to the screen. The Justice League also used it to monitor world events, such as disasters or threats from supervillains.

It also functioned as a viewing screen and as a space monitor, which could monitor space traffic approaching Earth, such as alien invaders from outer space.


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  1. As seen in the Superfriends season 1 episode The Shamon U (1973).
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