The KY-019 5V Single Channel Relay Module lets you safely control high-power devices like lights, motors, and appliances using low-voltage signals from microcontrollers such as Arduino or Raspberry Pi.
This module supports switching loads up to 10A at 250VAC or 30VDC. It features a built-in photocoupler for electrical isolation, protecting your control board from voltage spikes. The onboard LED indicator shows the relay status clearly.
With a simple 3-wire input (signal, VCC, GND), the relay activates when the input signal is HIGH and turns off when LOW. The module includes fixed mounting holes and screw terminals for easy installation.
Operating Voltage: 5V DC
Output Capacity: 10A @ 250VAC / 125VAC, 10A @ 30VDC / 28VDC
Input Trigger: High-level signal turns relay ON; Low-level turns it OFF
Input Current: Approx. 70mA
Electrical Isolation: Built-in photocoupler for safe control
Status Indicator: Onboard LED shows relay activation
Easy Connection: 3-wire interface for direct microcontroller control
Mounting: Screw holes and terminals for secure installation
Apply HIGH voltage (e.g., connect input pin to VCC) to turn the relay ON
Apply LOW voltage (e.g., connect input pin to GND) to turn it OFF
Input and output circuits are electrically isolated for safety
100% Original product that covered warranty by the vendor.
You have the right to return your orders within 72 hours.
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