5v 4 channel relay with optocoupler
5v 4 channel relay with optocoupler
5V 4-Channel Relay Module with Optocoupler
Control up to four high-voltage appliances, motors, or lights safely from your Arduino, Raspberry Pi, or ESP32 with this optocoupler-isolated 4-channel relay module. Available at The Tech Depot, Bengaluru - your trusted source for reliable electronics components with fast shipping and dedicated support.
Specifications
| Module Type | 4-Channel Relay Module with Optocoupler Isolation |
| Operating Voltage | 5V DC (control side) |
| Trigger Level | Active Low (0V to activate relay) |
| Number of Channels | 4 Independent Relays |
| Relay Type | SPDT (Single Pole Double Throw) - NO, NC, COM per channel |
| Relay Rating | 10A @ 250V AC / 10A @ 30V DC (per channel) |
| Coil Voltage | 5V DC |
| Optocoupler Chip | 817C (or equivalent) - provides electrical isolation |
| Isolation Voltage | Up to 5000V between control and load side |
| Control Signal Current | ~15-20 mA per channel |
| Quiescent Current | ~200 mA (all relays energized) |
| Indicator LEDs | 4 x Red LEDs (one per channel, indicates relay ON status) |
| Input Header | 6-pin (GND, IN1, IN2, IN3, IN4, VCC) |
| Output Terminals | Screw terminals - 3 per relay (NO, COM, NC) |
| Board Dimensions | ~75 mm x 55 mm x 19 mm |
| Mounting Holes | 4 x M3 corner holes for secure mounting |
| Weight | ~60 g |
| Compatibility | Arduino, Raspberry Pi, ESP32, ESP8266, STM32, PIC, 8051, and any 3.3V/5V microcontroller |
| Origin | Original/Authentic Components |
| Warranty | 7-day warranty on manufacturing defects |
| Support | Email & WhatsApp Technical Support 24/7 |
Key Features
- Optocoupler Isolation: Each channel uses an 817C optocoupler to electrically isolate the microcontroller from the high-voltage relay coil, protecting your development board from voltage spikes and back-EMF.
- 4 Independent Channels: Control four separate appliances, motors, solenoids, or circuits simultaneously from a single module.
- High-Power Switching: Each relay handles up to 10A at 250V AC or 10A at 30V DC - sufficient for household appliances, pumps, heaters, and lighting systems.
- Active-Low Trigger: Relays activate when the input pin is pulled LOW, making it compatible with most microcontroller GPIO logic and easy to implement in code.
- LED Status Indicators: Individual red LEDs for each channel provide instant visual feedback on which relays are currently energized.
- SPDT Relay Outputs: Each relay provides Normally Open (NO), Normally Closed (NC), and Common (COM) terminals, giving you flexibility for both on-state and off-state switching configurations.
- Screw Terminals for Secure Connections: Heavy-duty screw terminals ensure reliable high-current connections without soldering.
- Flyback Diodes Included: Built-in protection diodes across each relay coil suppress voltage spikes during switching, extending component life.
- Compact & Mountable: Four M3 mounting holes allow secure installation inside enclosures, control panels, or project boxes.
- Wide Microcontroller Compatibility: Works seamlessly with 5V logic (Arduino Uno, Mega, Nano) and 3.3V logic (ESP32, ESP8266, Raspberry Pi GPIO) thanks to the optocoupler input stage.
Why Choose This 4-Channel Relay Module?
- Safety First: Optocoupler isolation prevents dangerous high-voltage feedback from reaching your microcontroller - essential for any project involving mains electricity.
- 100% Authentic Components: Sourced directly from trusted, authorized suppliers. Every module is inspected for quality before shipping.
- Versatile 4-Channel Design: One module replaces four individual relay boards, saving space, wiring complexity, and cost in multi-device control systems.
- Beginner-Friendly: Clear pin labeling, simple active-low logic, and abundant online tutorials make this module accessible to students and first-time builders.
- Professional-Grade Reliability: Rated for 100,000+ mechanical switching cycles per relay - built for long-term, continuous-duty applications.
Frequently Asked Questions
When will I receive my order?
Products ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.
Is technical support available?
Yes, 24/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.
What is your return policy?
7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.
Buy 5v 4 channel relay with optocoupler Online in India
Purchase the 5v 4 channel relay with optocoupler online at The Tech Depot - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on 5v 4 channel relay with optocoupler with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.
Looking to buy 5v 4 channel relay with optocoupler at the best price in India? The Tech Depot offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.