RobotDyn - Relay Module 1 Channel for Big Current, Operation 5V. VC - 30A 110VAC/250VAC/30VDC for Arduino Relay, arduino Relay 1 Channel, arduino Relay Module high Current

Hi, welcome to Robojax. in this video I'm going to introduce the 5 volts single channel relay for Arduino. so let's get started. this is the 5 volt one channel really so the job of the relay is that a small current that can turn a switch on and this switch can be connected to connect or disconnect a source so this would this relay is a switch that has a magnetic coil so when the current comes here that turns there's a transistor small transistor that magnetizes the coil and a switch connects so when the switch connects one of these connections will be connected and will be disconnected now I have here my multimeters will make bus when I connect it so there are three connections if you look here so we have NC we have COM common and NO, Normally Open. so NC is here connected to the common when the switch gets on so this comes down meaning this will be connected here so when it's on norma