5‑1PCS DC 3V/3.3V Isolated Drive Control Board – High Level Trigger Relay Module with Signal Indicator

Power up your DIY electronics, smart home projects, and automation builds with a relay module that just works. This DC 3V/3.3V Isolated Drive Control Board is designed for makers, students, and engineers who want safe, stable, and easy control of high‑power loads from low‑voltage microcontrollers. With optical isolation, clear signal indication, and a user‑friendly layout, it turns your ideas into reliable, real‑world switching in seconds.

⭐ Key Benefits & Features

• Easy High‑Level Trigger from MCU: Connect directly to your microcontroller I/O pins (3V/3.3V) and drive the relay with a simple high‑level signal. No complex circuitry – perfect for Arduino, ESP32, Raspberry Pi (3.3V logic) and more.
• Safe Optical Isolation: Built‑in optocoupler (EL817) separates your low‑voltage control side from the high‑power load side, helping protect your board and project from noise, spikes, and accidental shorts.
• Clear Output Signal Indicator: A bright onboard LED shows when the relay is active, so you can see your signal at a glance – ideal for testing, debugging, and classroom demos.
• Dual Power Supply Design: Separate power for control and load sides improves anti‑interference performance and stability, especially in noisy environments like motors, pumps, or power tools.
• Diode Continuity Protection: Integrated protection diode helps guard against reverse current and voltage spikes from inductive loads, extending the life of both the relay and your connected devices.
• Fast Response, Long Life: Response time under 20 ms and relay life up to 100,000 operations mean smooth, click‑fast switching you can rely on for repeated automation tasks.
• Handles Real‑World Loads: Control up to 10A 250VAC or 10A 30VDC – ideal for lamps, small appliances, fans, solenoids, and other medium‑power devices in your projects.
• Compact & User‑Friendly Layout: Slim board (70 × 20 × 17 mm) fits easily into project boxes and breadboard‑style setups, with clearly labeled pins that make wiring straightforward even for beginners.
• Great for Learning & Prototyping: Whether you are building your first smart switch or refining a professional prototype, this module gives you a simple, visual, and safe way to control mains‑level or DC loads.

💡 Where This Module Shines

• Smart home projects – control lights, fans, or sockets from your microcontroller.
• DIY automation – timers, sensor‑based switching, and remote‑controlled devices.
• Educational kits – demonstrate isolation, relays, and digital control in class.
• Prototyping – quickly test how your code interacts with real‑world loads.

📊 Specifications