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Daveault2 Nameless!
This article has not been given a name, as such, the name PX-41 Belt Buckle Detector, is purely conjectural.

Gru activates the PX-41 belt buckle detector.

If it picks up any traces of the serum, the sensor in your belt buckle will make a sound like this: MEE-MOW-MEE-MOW-MEE-MOW-MEE-MOW...!

The PX-41 Belt Buckle Detector is a device utilized by the Anti-Villain League that detects any traces of the PX-41's unique scent.                                  


Despicable Me 2[]

The AVL agent Lucy Wilde give this to Felonius Gru to look for traces of PX-41 in the wig store Eagle HairiClub. Unfortunately, because the detector is a belt, Gru is forced to pelvic thrust everywhere to get a reading. He did find a positive reading for PX-41 but Floyd Eaglesan, the owner of the shop, clueless of the mutagen being inside the store, stopped Gru and offered a wig to the ex-supervillain.