You can turn on the debug menu.
In the \data\raw\keybindings.json file change this row:
{ "type":"keybinding", "name": "Debug Menu", "category":"DEFAULTMODE", "id":"debug" },
to this:
{ "type":"keybinding", "name": "Debug Menu", "category":"DEFAULTMODE", "id":"debug", "bindings":[ { "input_method":"keyboard", "key":"`" } ] },
and you can bring up the debug menu with the ` key.
You can select the “Check game state…” option where you can see the planned events. Most of the time this is 0, but after you set off an alarm, it must be increased by 1.
When the eyebot spawn, the planned events will decrease by 1, also the “monsters exists” will be increase by 1.
But also you can just spawn an eyebot with the debug menu.