{"product_id":"hlk-sw16-16-channel-wifi-controlled-relay-board","title":"HLK SW16 16 Channel WiFi Controlled Relay Board","description":"\u003cmeta name=\"description\" content=\"Buy HLK SW16 16 Channel WiFi Controlled Relay Board 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\n\u003ch1\u003eHLK SW16 16 Channel WiFi Controlled Relay Board\u003c\/h1\u003e\n\n\u003cp\u003eThe HLK SW16 is a 16-channel WiFi-enabled relay control module designed for remote switching and automation of high-power electrical loads via smartphone or web interface. Industrial automation engineers, IoT developers, and smart home integrators use this board to build distributed control systems for machinery, lighting, HVAC systems, and power distribution networks. This product solves the critical challenge of implementing wireless load control without complex wiring infrastructure, enabling real-time monitoring and switching of up to 16 independent circuits from anywhere with internet connectivity.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe HLK SW16 operates on a microcontroller-based architecture that communicates via WiFi 802.11 b\/g\/n standard, allowing each of the 16 relay channels to be independently controlled through a dedicated mobile application or web dashboard. Each relay channel is rated for AC 250V\/10A or DC 30V\/10A switching capacity, making it suitable for controlling everything from low-voltage LED systems to high-power industrial motors. The board features isolated relay outputs with NO\/NC\/COM contacts, ensuring galvanic isolation between control circuits and load circuits, which is essential for preventing ground loops and protecting sensitive electronics from voltage spikes.\u003c\/p\u003e\n\n\u003cp\u003eWhat distinguishes the HLK SW16 from standard relay modules is its integrated WiFi connectivity without requiring external WiFi modules, combined with built-in surge protection and thermal management. The device supports both local network control and cloud-based remote access, allowing users to set up time-based automation schedules, conditional logic triggers, and real-time status monitoring. The compact DIN-rail mountable form factor makes it ideal for installation in electrical panels and control cabinets, while the modular relay design allows replacement of individual channels without replacing the entire board.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecification\u003c\/td\u003e\n\u003ctd\u003eDetails\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003e16 Channel WiFi Controlled Relay Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eHLK (Hualing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal\/Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7 days on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping\u003c\/td\u003e\n\u003ctd\u003e1-5 days from Bengaluru\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDelivery\u003c\/td\u003e\n\u003ctd\u003e7-8 days across India\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003e24\/7 via Email and WhatsApp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Channels\u003c\/td\u003e\n\u003ctd\u003e16 Independent Relay Channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC Switching Capacity\u003c\/td\u003e\n\u003ctd\u003e250V\/10A per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC Switching Capacity\u003c\/td\u003e\n\u003ctd\u003e30V\/10A per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWiFi Standard\u003c\/td\u003e\n\u003ctd\u003e802.11 b\/g\/n (2.4 GHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e12V DC (with onboard regulator)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Interface\u003c\/td\u003e\n\u003ctd\u003eMobile App, Web Dashboard, API\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelay Type\u003c\/td\u003e\n\u003ctd\u003eElectromagnetic Relays with NO\/NC\/COM Contacts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eDIN-Rail or Wall Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-10°C to +55°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity Range\u003c\/td\u003e\n\u003ctd\u003e10% to 90% (non-condensing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e16 Independent Relay Channels with individual control allowing simultaneous switching of multiple loads with microsecond precision and no crosstalk between channels\u003c\/li\u003e\n\u003cli\u003eBuilt-in WiFi Module eliminating the need for external WiFi shields, reducing component count and power consumption while simplifying circuit design\u003c\/li\u003e\n\u003cli\u003eCloud and Local Network Control supporting both LAN-based operation for critical systems and cloud access for remote monitoring, with automatic failover capability\u003c\/li\u003e\n\u003cli\u003eReal-time Status Monitoring providing instant feedback on relay state, voltage levels, and power consumption metrics through the mobile application\u003c\/li\u003e\n\u003cli\u003eProgrammable Automation Logic enabling time-based scheduling, sensor-triggered actions, and conditional switching without requiring external controllers\u003c\/li\u003e\n\u003cli\u003eGalvanic Isolation between control and load circuits preventing ground loops and protecting microcontrollers from high-voltage transients and EMI\u003c\/li\u003e\n\u003cli\u003eThermal Management with integrated heat dissipation and overload protection automatically shutting down faulty channels to prevent cascading failures\u003c\/li\u003e\n\u003cli\u003eModular Relay Design allowing individual channel replacement in the field without system downtime or complete board replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eApplications and Use Cases\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSmart Home Automation Systems controlling lighting circuits, water heaters, air conditioning units, and security systems through centralized WiFi-based management with voice assistant integration\u003c\/li\u003e\n\u003cli\u003eIndustrial Equipment Control managing motor starters, solenoid valves, pneumatic actuators, and power distribution in manufacturing facilities with real-time monitoring and predictive maintenance alerts\u003c\/li\u003e\n\u003cli\u003eAgricultural IoT Solutions automating irrigation systems, greenhouse climate control, and livestock management with weather-based triggers and remote farm monitoring capabilities\u003c\/li\u003e\n\u003cli\u003eBuilding Management Systems coordinating HVAC zones, lighting levels, access control, and energy distribution across commercial properties with occupancy-based optimization\u003c\/li\u003e\n\u003cli\u003eLaboratory and Research Automation controlling experimental equipment, power supplies, and data acquisition systems with precise timing and synchronized multi-channel switching\u003c\/li\u003e\n\u003cli\u003eRenewable Energy Systems managing solar inverter switching, battery charging circuits, and load distribution in off-grid and hybrid power installations\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Use\u003c\/h2\u003e\n\u003cp\u003eBegin by connecting the HLK SW16 to a 12V DC power supply with at least 2A capacity to ensure stable operation of all 16 relay channels. Connect your load circuits to the appropriate relay terminals (NO for normally open, NC for normally closed, and COM for common), ensuring that AC loads do not exceed 250V\/10A and DC loads do not exceed 30V\/10A per channel. Use proper gauge wiring (minimum 2.5mm² for 10A circuits) and include appropriate fuses or circuit breakers on the load side for overcurrent protection. Mount the board in a well-ventilated enclosure to prevent thermal buildup, especially when operating multiple channels simultaneously.\u003c\/p\u003e\n\n\u003cp\u003eDownload the HLK WiFi control application from your device's app store and create an account. Connect the board to your WiFi network by entering your SSID and password through the app's setup wizard. Once connected, you can individually toggle each of the 16 channels, set up time-based schedules, create automation rules based on sensor inputs, and monitor real-time status of all channels. The web dashboard provides an alternative interface for desktop-based control and advanced configuration options. For advanced users, the REST API documentation allows integration with third-party home automation platforms like Home Assistant, OpenHAB, or custom IoT solutions.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I control the HLK SW16 without internet connectivity?\u003c\/summary\u003e\n\u003cp\u003eYes, the HLK SW16 supports both local network control and cloud-based access. When connected to your home or office WiFi network, you can control all 16 channels using the mobile app or web dashboard without requiring internet connectivity. Cloud access is optional and only needed if you want to control the device remotely from outside your local network. This dual-mode operation ensures reliability even during internet outages.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the maximum load capacity for each relay channel?\u003c\/summary\u003e\n\u003cp\u003eEach relay channel can switch a maximum of 250V AC at 10A or 30V DC at 10A. This translates to approximately 2.5kW for AC loads and 300W for DC loads per channel. For loads exceeding these ratings, you can use the relay outputs to trigger larger contactors or solid-state relays. Always include appropriate fusing on the load side to protect against short circuits and overloads.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs the HLK SW16 compatible with smart home ecosystems like Alexa or Google Home?\u003c\/summary\u003e\n\u003cp\u003eThe HLK SW16 can be integrated with popular smart home platforms through its REST API or by using compatible middleware like Home Assistant or OpenHAB. Some third-party developers have created custom Alexa and Google Home skills for HLK devices. Check the latest community forums and GitHub repositories for available integrations, as compatibility depends on your specific firmware version and the integration layer you choose to implement.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow many relays can I switch simultaneously without damaging the board?\u003c\/summary\u003e\n\u003cp\u003eThe HLK SW16 can switch all 16 channels simultaneously without hardware damage. However, the total current draw from the 12V power supply must not exceed its rated capacity. If you're switching many high-current loads at once, ensure your power supply can deliver sufficient current. A 2A supply is adequate for control circuits, but if you're powering solenoids or other inductive loads from the same supply, use a separate power source for the loads to prevent voltage sag affecting the relay control circuits.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use the HLK SW16 for DC motor control?\u003c\/summary\u003e\n\u003cp\u003eThe HLK SW16 relays can switch DC motors up to 30V\/10A (300W). For larger motors, use the relay outputs to control motor contactors or motor starters. For variable speed control, the relays can switch PWM circuits or DC chopper modules. The relay contacts are suitable for DC switching, but ensure you include a freewheeling diode across inductive loads like motor coils to protect the relay contacts from arcing caused by back-EMF when the relay opens.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eOrders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return and warranty policy?\u003c\/summary\u003e\n\u003cp\u003eWe offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. 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 for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eWhy Buy from The Tech Depot\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Products: Sourced directly from authorized distributors with authentication\u003c\/li\u003e\n\u003cli\u003eExpert Team: Our technical team validates every product before listing\u003c\/li\u003e\n\u003cli\u003eFast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse\u003c\/li\u003e\n\u003cli\u003ePan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata\u003c\/li\u003e\n\u003cli\u003ePayment Options: COD, UPI, credit\/debit cards, net banking, EMI available\u003c\/li\u003e\n\u003cli\u003eTechnical Support: 24\/7 expert guidance via email and WhatsApp\u003c\/li\u003e\n\u003cli\u003eReturns: 7-day return policy on manufacturing defects only\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBuy HLK SW16 16 Channel WiFi Controlled Relay Board Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eHLK SW16 16 Channel WiFi Controlled Relay Board\u003c\/strong\u003e online at \u003ca href=\"https:\/\/thetechdepot.in\"\u003eThe Tech Depot\u003c\/a\u003e, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and\u003c\/p\u003e","brand":"The Tech Depot","offers":[{"title":"Default Title","offer_id":48746581819649,"sku":"TTD-18170","price":1823.2,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/1577\/3185\/files\/9a3742e91a2675130a4d471b055097d1.jpg?v=1778108071","url":"https:\/\/techdepot.in\/products\/hlk-sw16-16-channel-wifi-controlled-relay-board","provider":"Tech Depot India","version":"1.0","type":"link"}