{"product_id":"wifi-smart-4-way-relay-module-self-locking-wireless-switch","title":"WiFi Smart 4-Way Relay Module | Self-Locking Wireless Switch","description":"\n\u003ch2\u003eWiFi Smart 4-Way Relay Module — Self-Locking, Interlock \u0026amp; Inching Wireless Switch\u003c\/h2\u003e\n\u003cp\u003eTake full control of your home automation setup with the \u003cstrong\u003eAsia-Teco T1 WiFi Smart 4-Way Relay Module\u003c\/strong\u003e. This compact yet powerful wireless switch board supports three versatile operating modes — \u003cstrong\u003emomentary (inching), self-locking, and interlock\u003c\/strong\u003e — and is compatible with both Android and iOS via the free \u003cstrong\u003eeWeLink app\u003c\/strong\u003e. Whether you're automating lights, motors, gates, or other low-power circuits, this relay module delivers flexible, reliable remote control from anywhere in the world.\u003c\/p\u003e\n\n\u003cp style=\"background:#fff8e1;border-left:4px solid #f9a825;padding:12px 16px;margin:16px 0;\"\u003e\u003cstrong\u003e⚠️ Important Notes:\u003c\/strong\u003e\u003cbr\u003e\n• The relays are dry-contact switches with \u003cstrong\u003eno output\u003c\/strong\u003e — the AC\/DC power supply input powers the PCBA only.\u003cbr\u003e\n• Tap the work mode button manually to switch between operating modes.\u003cbr\u003e\n• \u003cstrong\u003eInching mode:\u003c\/strong\u003e Two wiring options — turn ON for 1 s then auto-OFF, or turn OFF for 1 s then auto-ON.\u003cbr\u003e\n• \u003cstrong\u003eSelf-locking mode:\u003c\/strong\u003e Remotely toggle connected devices ON or OFF instantly.\u003cbr\u003e\n• \u003cstrong\u003eInterlock mode:\u003c\/strong\u003e Available on 2-gang and 4-gang versions only; ideal for controlling AC\/DC motors (e.g. forward\/reverse).\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e📱 \u003cstrong\u003eApp Control (eWeLink):\u003c\/strong\u003e Manage all four channels remotely from your Android or iOS smartphone, anywhere with an internet connection.\u003c\/li\u003e\n  \u003cli\u003e🔄 \u003cstrong\u003e3 Work Modes:\u003c\/strong\u003e Momentary (inching), self-locking, and interlock — switchable with a single button press.\u003c\/li\u003e\n  \u003cli\u003e⚡ \u003cstrong\u003eWide Voltage Range:\u003c\/strong\u003e Operates on DC 5V–32V (or AC 220V) power input, making it compatible with a broad range of installations.\u003c\/li\u003e\n  \u003cli\u003e🏠 \u003cstrong\u003eSmart Home Ready:\u003c\/strong\u003e Seamlessly integrates with eWeLink-compatible smart home ecosystems for scene automation and scheduling.\u003c\/li\u003e\n  \u003cli\u003e🔗 \u003cstrong\u003e4-Channel Control:\u003c\/strong\u003e Control up to four independent circuits or devices simultaneously.\u003c\/li\u003e\n  \u003cli\u003e📐 \u003cstrong\u003eCompact Form Factor:\u003c\/strong\u003e Slim 74 × 73 × 3 mm PCB board fits easily inside enclosures and electrical panels.\u003c\/li\u003e\n  \u003cli\u003e⏱️ \u003cstrong\u003eFast Response:\u003c\/strong\u003e Relay max release time of just 5 ms for near-instantaneous switching.\u003c\/li\u003e\n  \u003cli\u003e🚫 \u003cstrong\u003eNo High-Concern Chemicals:\u003c\/strong\u003e Compliant — contains no high-concern chemical substances.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eAsia-Teco\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eT1\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eOperating Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eDC 5V–32V \/ AC 220V\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eRated Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e1A\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eRelay Max Release Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e5 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eTransfer Mode\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eWiFi\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eCompatible Systems\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eAndroid \/ iOS\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eContact Load\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eLow Power\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e74 × 73 × 3 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eMade in China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat Can You Control?\u003c\/h3\u003e\n\u003cp\u003eThis relay module is perfect for a wide range of smart home and DIY automation projects, including:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLighting systems and LED strips\u003c\/li\u003e\n  \u003cli\u003eGate openers and garage door controllers\u003c\/li\u003e\n  \u003cli\u003eAC\/DC motor direction control (interlock mode)\u003c\/li\u003e\n  \u003cli\u003eWater pumps and irrigation valves\u003c\/li\u003e\n  \u003cli\u003eFan speed switching or appliance automation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor guidance on smart home electrical safety and wiring best practices, refer to the U.S. Consumer Product Safety Commission's Electrical Safety resources.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What app does the WiFi Smart 4-Way Relay Module use for remote control?\u003c\/h4\u003e\n\u003cp\u003eA: This relay module uses the \u003cstrong\u003eeWeLink app\u003c\/strong\u003e, available for free on both Android and iOS. Once your device is connected to your home WiFi network and added to the app, you can control all four relay channels remotely from anywhere with an internet connection, set schedules, and create automation scenes.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is the difference between inching, self-locking, and interlock modes?\u003c\/h4\u003e\n\u003cp\u003eA: \u003cstrong\u003eInching (momentary) mode\u003c\/strong\u003e briefly activates the relay for 1 second before automatically returning to its original state — great for doorbell triggers or momentary pulses. \u003cstrong\u003eSelf-locking mode\u003c\/strong\u003e keeps the relay toggled ON or OFF until you manually change it — ideal for lights and appliances. \u003cstrong\u003eInterlock mode\u003c\/strong\u003e (4-gang version) ensures that when one relay is active, the others in the group remain off — perfect for controlling the forward\/reverse direction of AC\/DC motors safely.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does the relay module work with AC 220V devices?\u003c\/h4\u003e\n\u003cp\u003eA: The AC\/DC power input (DC 5V–32V or AC 220V) is used solely to power the relay module's PCB — the relays themselves are dry-contact switches with no output voltage. You wire your own AC or DC load circuit through the relay contacts. Always follow your local electrical codes and safety guidelines when wiring high-voltage circuits.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How do I switch between the three working modes?\u003c\/h4\u003e\n\u003cp\u003eA: Simply press the \u003cstrong\u003ework mode setting button\u003c\/strong\u003e on the module manually to cycle through inching, self-locking, and interlock modes. You can also configure mode settings through the eWeLink app for added convenience.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What app does the WiFi Smart 4-Way Relay Module use for remote control?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This relay module uses the eWeLink app, available for free on both Android and iOS. 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