Businesspro Mall M5Stack Light Unit with Photo-resistance (行貨1年保養) LIGHT is a light intensity sensor unit with an adjustable photoresistor。 A photoresistor is a light-controlled variable resistor. The resistance of a photoresi Product #: businesspro-M5Stack Light Unit with Photo-resistance (行貨1年保養) Regular price: $HKD$19.0 Available from: Businesspro MallIn stock