{"product_id":"5v-4-channel-relay-with-optocoupler","title":"5v 4 channel relay with optocoupler","description":"\u003cmeta name=\"description\" content=\"Buy 5v 4 channel relay with optocoupler online in India at best price from The Tech Depot, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n```html\n\u003ch1\u003e5V 4-Channel Relay Module with Optocoupler\u003c\/h1\u003e\n\u003cp\u003eControl 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.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003e4-Channel Relay Module with Optocoupler Isolation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e5V DC (control side)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTrigger Level\u003c\/td\u003e\n\u003ctd\u003eActive Low (0V to activate relay)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Channels\u003c\/td\u003e\n\u003ctd\u003e4 Independent Relays\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelay Type\u003c\/td\u003e\n\u003ctd\u003eSPDT (Single Pole Double Throw) - NO, NC, COM per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelay Rating\u003c\/td\u003e\n\u003ctd\u003e10A @ 250V AC \/ 10A @ 30V DC (per channel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoil Voltage\u003c\/td\u003e\n\u003ctd\u003e5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptocoupler Chip\u003c\/td\u003e\n\u003ctd\u003e817C (or equivalent) - provides electrical isolation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003eUp to 5000V between control and load side\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Signal Current\u003c\/td\u003e\n\u003ctd\u003e~15-20 mA per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuiescent Current\u003c\/td\u003e\n\u003ctd\u003e~200 mA (all relays energized)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndicator LEDs\u003c\/td\u003e\n\u003ctd\u003e4 x Red LEDs (one per channel, indicates relay ON status)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Header\u003c\/td\u003e\n\u003ctd\u003e6-pin (GND, IN1, IN2, IN3, IN4, VCC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Terminals\u003c\/td\u003e\n\u003ctd\u003eScrew terminals - 3 per relay (NO, COM, NC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoard Dimensions\u003c\/td\u003e\n\u003ctd\u003e~75 mm x 55 mm x 19 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Holes\u003c\/td\u003e\n\u003ctd\u003e4 x M3 corner holes for secure mounting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e~60 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eArduino, Raspberry Pi, ESP32, ESP8266, STM32, PIC, 8051, and any 3.3V\/5V microcontroller\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal\/Authentic Components\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp Technical Support 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptocoupler Isolation:\u003c\/strong\u003e 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.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4 Independent Channels:\u003c\/strong\u003e Control four separate appliances, motors, solenoids, or circuits simultaneously from a single module.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Power Switching:\u003c\/strong\u003e Each relay handles up to 10A at 250V AC or 10A at 30V DC - sufficient for household appliances, pumps, heaters, and lighting systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eActive-Low Trigger:\u003c\/strong\u003e Relays activate when the input pin is pulled LOW, making it compatible with most microcontroller GPIO logic and easy to implement in code.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLED Status Indicators:\u003c\/strong\u003e Individual red LEDs for each channel provide instant visual feedback on which relays are currently energized.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSPDT Relay Outputs:\u003c\/strong\u003e 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.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScrew Terminals for Secure Connections:\u003c\/strong\u003e Heavy-duty screw terminals ensure reliable high-current connections without soldering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlyback Diodes Included:\u003c\/strong\u003e Built-in protection diodes across each relay coil suppress voltage spikes during switching, extending component life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Mountable:\u003c\/strong\u003e Four M3 mounting holes allow secure installation inside enclosures, control panels, or project boxes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Microcontroller Compatibility:\u003c\/strong\u003e Works seamlessly with 5V logic (Arduino Uno, Mega, Nano) and 3.3V logic (ESP32, ESP8266, Raspberry Pi GPIO) thanks to the optocoupler input stage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose This 4-Channel Relay Module?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First:\u003c\/strong\u003e Optocoupler isolation prevents dangerous high-voltage feedback from reaching your microcontroller - essential for any project involving mains electricity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% Authentic Components:\u003c\/strong\u003e Sourced directly from trusted, authorized suppliers. Every module is inspected for quality before shipping.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile 4-Channel Design:\u003c\/strong\u003e One module replaces four individual relay boards, saving space, wiring complexity, and cost in multi-device control systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBeginner-Friendly:\u003c\/strong\u003e Clear pin labeling, simple active-low logic, and abundant online tutorials make this module accessible to students and first-time builders.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfessional-Grade Reliability:\u003c\/strong\u003e Rated for 100,000+ mechanical switching cycles per relay - built for long-term, continuous-duty applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy 5v 4 channel relay with optocoupler Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003e5v 4 channel relay with optocoupler\u003c\/strong\u003e online at \u003ca href=\"https:\/\/thetechdepot.in\"\u003eThe Tech Depot\u003c\/a\u003e - 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 \u003cstrong\u003e5v 4 channel relay with optocoupler\u003c\/strong\u003e 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.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003e5v 4 channel relay with optocoupler\u003c\/strong\u003e 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.\u003c\/p\u003e","brand":"The Tech Depot","offers":[{"title":"Default Title","offer_id":48746575134977,"sku":"TTD-18052","price":262.35,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/1577\/3185\/files\/4c66d7738aabb2874079d5e929b140ca.jpg?v=1778107907","url":"https:\/\/techdepot.in\/products\/5v-4-channel-relay-with-optocoupler","provider":"Tech Depot India","version":"1.0","type":"link"}