{"product_id":"12v-bistable-latching-relay-dpdt-hfd2-2a-30vdc-1a-125vac","title":"12V Bistable Latching Relay DPDT HFD2 | 2A 30VDC 1A 125VAC","description":"\n\u003ch2\u003e12V Coil Bistable Latching Relay – DPDT HFD2-005-S-L2-D\u003c\/h2\u003e\n\u003cp\u003eThis compact \u003cstrong\u003e12V bistable latching relay\u003c\/strong\u003e (DPDT, 10-pin) is an ideal pick for electronics hobbyists, engineers, and DIY circuit builders who need a reliable, low-power switching component. Unlike standard relays, a bistable (latching) relay holds its switched state without continuous coil power — saving energy and reducing heat in your projects.\u003c\/p\u003e\n\n\u003cp\u003eWith a silver-gold alloy (Ag-AuAg8) contact material, ultra-fast 4ms operate \/ 3ms release times, and a wide operating temperature range of -40°C to +85°C, this relay performs consistently across a broad range of applications including automation circuits, microcontroller projects, and DIY home electronics.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Bistable \/ Latching Relay – holds state without continuous coil power\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eContact Form:\u003c\/strong\u003e 2CO (DPDT – Double Pole Double Throw)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoil Voltage:\u003c\/strong\u003e 12V DC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eContact Rating:\u003c\/strong\u003e 2A @ 30VDC \u0026amp; 1A @ 125VAC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eContact Material:\u003c\/strong\u003e Ag-AuAg8 (Silver-Gold alloy) for low contact resistance \u0026amp; long life\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePins:\u003c\/strong\u003e 10-pin through-hole configuration\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperate \/ Release Time:\u003c\/strong\u003e 4ms \/ 3ms\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoil Consumption:\u003c\/strong\u003e 150mW (low power draw)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40°C to +85°C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact Size:\u003c\/strong\u003e approx. 2 × 1 × 1 cm (0.79 × 0.39 × 0.39 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Plastic housing + Metal contacts\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFull Specifications\u003c\/h3\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003cth style=\"padding:8px; border:1px solid #ddd; text-align:left;\"\u003eParameter\u003c\/th\u003e\n\u003cth style=\"padding:8px; border:1px solid #ddd; text-align:left;\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eHFD2-005-S-L2-D\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eCoil Voltage\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e12V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eContact Form\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e2CO (DPDT)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eContact Rating (AC)\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e1A @ 125VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eContact Rating (DC)\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e2A @ 30VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eContact Material\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eAg-AuAg8\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eOperate \/ Release Time\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e4ms \/ 3ms\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eCoil Consumption\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e150mW\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eTemperature Range\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e-40°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e~2 × 1 × 1 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003ePins\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e10-pin through-hole\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eHousing Color\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eWhite\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eOrigin\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eMainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's in the Box?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × HFD2-005-S-L2-D 12V Bistable Latching Relay\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCommon Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eArduino \/ Raspberry Pi \u0026amp; microcontroller switching circuits\u003c\/li\u003e\n  \u003cli\u003eDIY home automation and smart switch builds\u003c\/li\u003e\n  \u003cli\u003eBattery-powered IoT devices requiring low standby power\u003c\/li\u003e\n  \u003cli\u003eTelecommunications \u0026amp; signal routing equipment\u003c\/li\u003e\n  \u003cli\u003ePCB prototyping and electronic project boards\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor general safety guidelines when working with electrical components, refer to the U.S. Consumer Product Safety Commission – Electrical Safety.\u003c\/p\u003e\n\n\u003ch3\u003eYou May Also Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-percent-better-every-day-motivational-canvas-wall-poster-inspirational-quote\"\u003e\"1% Better Every Day\" Motivational Canvas Poster | Wall Art\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/everything-is-fine-trust-government-mens-graphic-t-shirt-cotton\"\u003e\"Everything Is Fine\" Funny Men's Graphic T-Shirt | Cotton Tee\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eImportant Notes\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003eProduct images are for illustration only — please refer to the written specifications for exact dimensions.\u003c\/li\u003e\n  \u003cli\u003eMinor measurement variations (±1–2mm) may occur due to manual measurement.\u003c\/li\u003e\n  \u003cli\u003eColor displayed may vary slightly depending on your monitor's calibration.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What does \"bistable latching relay\" mean, and why does it matter?\u003c\/h4\u003e\n\u003cp\u003eA: A bistable latching relay has two stable positions — it switches ON with a pulse and stays ON without needing continuous coil power. It only needs another pulse to switch OFF. This is perfect for battery-powered or energy-sensitive projects because the coil draws zero power between switching events, significantly reducing overall power consumption.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is DPDT and how many circuits can this relay switch?\u003c\/h4\u003e\n\u003cp\u003eA: DPDT stands for Double Pole Double Throw. This relay can simultaneously control two independent circuits, each with a common, normally-open (NO), and normally-closed (NC) connection — giving you flexible switching options in a single compact component.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this relay compatible with Arduino or Raspberry Pi projects?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. With a 12V coil and just 150mW coil consumption, this relay works well in microcontroller-driven circuits when paired with a suitable transistor or relay driver module to handle the coil switching from a 3.3V or 5V GPIO pin.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What are the contact ratings, and can it switch mains voltage?\u003c\/h4\u003e\n\u003cp\u003eA: The contact is rated at 1A @ 125VAC and 2A @ 30VDC. While 125VAC is within the low-voltage range, always follow local electrical codes and safety standards when working with any AC circuit. This relay is best suited for low-current signal and control applications rather than high-load mains switching.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What does \\\"bistable latching relay\\\" mean, and why does it matter?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A bistable latching relay has two stable positions — it switches ON with a pulse and stays ON without needing continuous coil power. It only needs another pulse to switch OFF. This is perfect for battery-powered or energy-sensitive projects because the coil draws zero power between switching events, significantly reducing overall power consumption.\"}}, {\"@type\": \"Question\", \"name\": \"What is DPDT and how many circuits can this relay switch?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"DPDT stands for Double Pole Double Throw. This relay can simultaneously control two independent circuits, each with a common, normally-open (NO), and normally-closed (NC) connection — giving you flexible switching options in a single compact component.\"}}, {\"@type\": \"Question\", \"name\": \"Is this relay compatible with Arduino or Raspberry Pi projects?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. With a 12V coil and just 150mW coil consumption, this relay works well in microcontroller-driven circuits when paired with a suitable transistor or relay driver module to handle the coil switching from a 3.3V or 5V GPIO pin.\"}}, {\"@type\": \"Question\", \"name\": \"What are the contact ratings, and can it switch mains voltage?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The contact is rated at 1A @ 125VAC and 2A @ 30VDC. While 125VAC is within the low-voltage range, always follow local electrical codes and safety standards when working with any AC circuit. This relay is best suited for low-current signal and control applications rather than high-load mains switching.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/vd0uzy-jp.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Soldering \u0026 Electrical\", \"item\": \"https:\/\/vd0uzy-jp.myshopify.com\/collections\/soldering-electrical\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"12V Bistable Latching Relay DPDT HFD2 | 2A 30VDC 1A 125VAC\", \"item\": \"https:\/\/vd0uzy-jp.myshopify.com\/products\/12v-bistable-latching-relay-dpdt-hfd2-2a-30vdc-1a-125vac\"}]}\u003c\/script\u003e","brand":"Peaceful Pleasures Health and Wellness","offers":[{"title":"Default Title","offer_id":53668316840249,"sku":"1005012576604057-Default Title","price":3.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0933\/3689\/5801\/files\/S42c22fbb5b964eabb5fabe3d5a23e28eU.webp?v=1783037081","url":"https:\/\/peacefulpleasureswellness.com\/products\/12v-bistable-latching-relay-dpdt-hfd2-2a-30vdc-1a-125vac","provider":"Peaceful Pleasures Health and Wellness","version":"1.0","type":"link"}