Cleanup Go! Carpenters!

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A type of sensor designed by Kousuke Entouji to detect traces of Element Z0, a particle emitted by Zonder Metal. A prototype wearable version was first deployed in the field by Geki Hyuuma in an attempt to detect the Zonder Robo EI-10. The Z Sensor would eventually become part of GGG's standard detection apparatus.

The Z Sensor's ability to detect Zonders is limited: it cannot detect Zonders in human form, nor can it detect Zonderians or any of the 31 Machine Primevals.