Thing type 411, Teleporter Monitor, also known as the Mix-up Monitor, is a monitor that swaps around all of the players' locations upon its destruction. When only one player is in the game, or when playing in Single Player, Hide & Seek or Race, the Teleporter Monitor has no effect. This monitor also has no effect on players in their Super form.
Checking the Ambush flag turns this monitor into a Weak Random Monitor, out of which it may randomly respawn with a probability of 3.13%. Checking the Special flag turns it into a Strong Random Monitor. This is not recommended however, because SRMs do not spawn Teleport Monitors.