DC 5V 4 Kanal Relais Modul Shield Terminal Relay Board für Arduino UNO R3-
6,31 €
It also provides NO (Normally Open) / NC (Normally Closed) interface. Standardized shield form factor enables smooth connection with Arduino and compatibles. The shield also has four LED indicators to show the on/off state of each relay.Relays are useful in switching on/off AC appliances like fan, light, motor or high current DC actuators like solenoid valve etc.
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