1-Channel Relay Module – 5V DC 10A (Through-Hole / TH)

Bridge the gap between low-power microcontrollers and high-voltage electrical appliances with the 1-Channel 5V 10A Relay Module. Precision-engineered for automated systems, this compact module acts as a safe, heavy-duty switch to control a single AC or DC electrical load from a safe distance.

Whether you need to switch a single light, fan, solenoid valve, or small water pump, this board allows your 5V microcontrollers to handle high-current circuits up to 240V AC or 30V DC safely. Built using rugged through-hole (TH) technology and assembled with strict lead-free manufacturing practices, it provides excellent thermal stability, thick power tracing, and superior structural durability under prolonged switching workloads.

Key Features

• Single-Channel Efficiency: Control a dedicated electrical load independently from your microcontroller board using a single digital I/O line.

• Complete Optocoupler Isolation: Equipped with an onboard high-speed optocoupler that creates a physical light barrier between the control logic and high-voltage rails, protecting your Arduino, ESP32, or Raspberry Pi from inductive kickbacks and voltage surges.

• Flexible Trigger Logic: Designed with an adjustable jumper setting that allows you to easily switch between High-Level Trigger or Low-Level Trigger logic to match your software architecture.

• Robust Through-Hole (TH) Design: Manufactured using through-hole solder components to ensure stronger mechanical mounting bonds and enhanced current handling along the copper traces.

• Onboard Status Indicator: Features a bright SMD LED providing instant visual feedback whenever the relay channel is actively closed.

Technical Specifications

Lead-Free & Soldering Safety

• 100% Lead-Free PCB: The base circuit board is constructed from eco-friendly, lead-free materials, aligning fully with global industrial safety and environmental practices.

• Factory Pre-Soldered Components: All heavy-duty terminal blocks, optocouplers, and power traces are mounted using high-grade, lead-free solder wire to ensure optimal electrical conductivity.

• Enhanced Thermal Strength: The premium lead-free solder joints offer superior resistance against crystallization and structural drying, even when cycling heavy 10A electrical loads over extended periods.

Hardware Wiring & Pin Layout

The module is split into a low-voltage control header on one side and a high-voltage screw terminal on the other:

1. Logic Control Input (Header Pins):

• VCC: Connects to the +5V DC supply rail from your microcontroller.

• GND: System ground reference pin.

• IN1: Digital input trigger pin. Pulling this line HIGH or LOW (depending on your jumper setting) activates the relay channel.

2. High-Voltage Load Output (3-Way Screw Terminal):

• NO (Normally Open): The circuit stays disconnected/open until the input trigger pin commands the relay to close.

• NC (Normally Closed): The circuit stays connected/closed by default until the relay is triggered to open.

• COM (Common Terminal): The central power wire from your load hooks up here.

Common Applications

• Smart Home Automation: Create custom switch setups to automate a single ceiling fan, household light fixture, television set, or water geyser via home assistants.

• Industrial PLC Interfacing: Act as an intermediate sub-relay board to allow low-power logic sensors to toggle a heavy pneumatic valve or factory siren safely.

• Agricultural Automation: Automate single-zone water pump schedules, greenhouse ventilation systems, and livestock feeding mechanisms using microcontrollers.

Package Includes:

• 1 x 1-Channel Relay Module 5V 10A TH