What is "nonswitchable"

Usage examples of "nonswitchable".

The screen was showing the attempts of Zambendorf, who was elsewhere in a sealed room with no means of communication to the outside apart from a nonswitchable, hard-wired terminal, to divine the contents of closed envelopes selected blind by Periera, guess random sequences of numbers and ESP cards, and describe drawings made on the spur of the moment by both the testers.