Businesspro Mall M5Stack Mini Button Unit (行貨1年保養) BUTTON is a single button Unit. The button status can be detected by the input pin status,simply capture the high/low electrical level. As shown in the figure Product #: businesspro-M5Stack Mini Button Unit (行貨1年保養) Regular price: $HKD$14.0 Available from: Businesspro MallIn stock