Businesspro Mall M5Stack Mini 3A Relay Unit (行貨1年保養) RELAY, as its namesake, is a M5Unit that implenments a Relay functions. Relay can be used as an electrically operated switch, uses an electromagnet to mechanica Product #: businesspro-M5Stack Mini 3A Relay Unit (行貨1年保養) Regular price: $HKD$18.0 Available from: Businesspro MallIn stock
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