作動 さどう電圧 でんあつ表示 ひょうじ じゃなかったです
sadōden'atsuhyōjikijanakattadesu

Noun
Desu Copula

The polite, past negative form of 作動電圧表示器

1. Was not a voltage indicator.; Wasn't a voltage indicator.

Past/Perfective
Negative
Polite
Casual Register
Computing