1-Channel Relay Module – 5V DC 10A (SMD + Through-Hole Hybrid)
Bridge the gap between low-power microcontrollers and high-voltage electrical appliances with the 1-Channel 5V 10A SMD+TH Relay Module. Precision-engineered by Muonix, this module features an advanced hybrid architecture that combines a low-profile Surface Mount Device (SMD) control circuit with rugged Through-Hole (TH) power routing.
Whether you need to switch a light, fan, solenoid valve, or custom automation rig, this compact module allows your 5V microcontrollers to handle high-current circuits up to 240V AC or 30V DC safely. Assembled under strict lead-free manufacturing practices, it provides unparalleled space efficiency, excellent thermal stability, and maximum structural durability under prolonged switching workloads.
Key Features
SMD + TH Hybrid Design: Features a low-profile SMD design for the signal control circuit (diodes, resistors, transistors) to minimize the footprint, paired with a heavy-duty Through-Hole (TH) anchoring system for the power relays and terminal blocks to withstand mechanical strain and heavy electrical loads.
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 code's architecture.
Onboard Status Indicator: Features a bright SMD LED providing instant visual feedback whenever the relay channel is actively closed.
Technical Specifications
Feature | Specification |
Number of Channels | 1 Channel |
Relay Control Voltage | 5V DC Nominal |
Trigger Current | 5 mA – 10 mA |
Max Switching AC Load | 10A @ 250V AC | 10A @ 125V AC |
Max Switching DC Load | 10A @ 30V DC | 10A @ 28V DC |
Component Assembly | Hybrid SMD (Control Logic) + Through-Hole (Power Rails) |
Contact Configuration | SPDT (1x NO, 1x NC, 1x COM) |
Isolation Type | Phototransistor Optocoupler Isolation |
Board Dimensions | 50 mm x 26 mm x 18 mm |
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.
🛡️ Compliance Note: Fully RoHS Compliant & Lead-Free architecture. This ensures a clean, non-toxic hardware profiling that is completely safe for educational engineering workshops, academic university labs, smart home enclosures, and commercial automation control panels.
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.
Safety Warning: Working with high-voltage 220V–240V AC mains lines carries an inherent risk of electrical shock. Always ensure your main power breakers are completely turned off before cutting, stripping, or securing wires to the screw terminal.
Package Includes:
1 x 1-Channel Relay Module 5V 10A SMD+TH Hybrid