1 channel Relay module Used in OSOYOO STEM Kit for Micro:bit ,Arduino ,Raspberry Pi (model#2019011500)
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Color
Black
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Quantity
1
Description
A relay is an electrically operated switch. Many relays use an electromagnet to mechanically operate a switch, but other operating principles are also used, such as solid-state relays. Relays are used where it is necessary to control a circ...