5v Relay Pin Diagram. Since the arduino operates at 5v it can t control these higher voltage devices directly but you can use a 5v relay to switch the 120 240v current and use the arduino to control the relay. 5v and gnd and connect the control signal from arduino to control pin on the relay board.
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5v relay transistor diode leds resistors male header pins 3 pin screw type terminal connector etc. A 5 pins type relay. The ky 019 consist of a 1mω resistor a led a 1n4007 rectifier diode and a 5vdc relay capable of handling up to 250vac and 10a.
5v and gnd and connect the control signal from arduino to control pin on the relay board.
On the dc side of the board there are 3 pins for signal power and ground. The ky 019 consist of a 1mω resistor a led a 1n4007 rectifier diode and a 5vdc relay capable of handling up to 250vac and 10a. 5v 5 pin relay module. There are two types of relay modules according to a type of control signal used for relay activation.
