Fuse
No published effectThe item exists and is findable. Nobody has published what it does.
No published effect. This page does not guess at one.
A fuse implies powered objects, and Michael's Blackout ability temporarily disables anything powered in an area — which makes an obvious-looking connection. It is still only obvious-looking. No source documents what a fuse does or where it is used, so the connection stays an observation about the game's vocabulary rather than a mechanic you can rely on.
Where this comes from
Listed on r/TheHalloweenGame among items with "no explanation for their use".
How to read this
Every item page on this site carries one of three states, and they mean different things. Confirmed means a specific, actionable effect is documented or agreed on by players who tested it. Theorised means a hypothesis exists and the people offering it say it is unproven. No published effect means the item exists and is findable and nobody has published what it does — which is a real answer to a real question, and the one most likely to be dressed up as something else elsewhere.
Keep going
Ancient Amulet
Negates Michael's first grab and blinds him for roughly three seconds — no button press needed.
Fragile Hourglass
Players think it does something to Michael's cooldowns. Nobody has confirmed it.
Brass Lantern
A rare item with no published effect. Named by players as one the game never explains.
Sources: Steam store listing (app 3219630)