KY-019 5V 1 Channel Relay Module COM45,R18

Description

The KY-019 is a 5V single-channel relay module designed to control high-voltage devices using low-voltage signals from microcontrollers like Arduino, Raspberry Pi, and ESP32. It’s commonly used in IoT projects to manage appliances such as lights and motors.

• Relay Capacity: Capable of handling up to 10A at 250V AC or 30V DC, making it suitable for controlling various high-power devices.

• Input Voltage: Operates with a 5V DC input, compatible with most microcontrollers. ​

• Control Signal Voltage: Recognizes a HIGH signal (3.3V to 5V) to activate the relay, allowing flexibility with different logic level controllers. ​

• LED Indicator: An onboard LED illuminates when the relay is active, providing a visual status indication. ​

Pin Configuration:

• S (Signal): Connects to the control signal from the microcontroller.​

• + (VCC): Connects to the 5V power supply.​

• – (GND): Connects to the ground of the power supply.​

Relay Output Terminals:

• NC (Normally Closed): Connected to the common terminal when the relay is inactive.​

• COM (Common): The common terminal for the relay switch.​

• NO (Normally Open): Connected to the common terminal when the relay is active.