{"product_id":"078-sm401-4in1-co-h2s-ch4-o2-multi-gas-sensor-module-with-rs485-uart-digital-output","title":"SM401-4in1 CO \/ H2S \/ CH4 \/ O2 Multi-Gas Sensor Module with RS485 \/ UART \/ Digital Output","description":"\u003cdiv style=\"font-family:Arial,Helvetica,sans-serif;color:#102238;line-height:1.65;\"\u003e\n  \u003cdiv style=\"padding:28px;border:1px solid #dbe8f6;background:#f5f9fd;\"\u003e\n    \u003cp style=\"margin:0 0 10px;font-size:12px;text-transform:uppercase;letter-spacing:.12em;color:#0d63ce;font-weight:700;\"\u003eYYS Sensor \/ B2B OEM Selection\u003c\/p\u003e\n    \u003ch2 style=\"margin:0 0 14px;font-size:26px;line-height:1.18;color:#07182f;\"\u003eSM401-4in1 CO \/ H2S \/ CH4 \/ O2 Multi-Gas Sensor Module with RS485 \/ UART \/ Digital Output\u003c\/h2\u003e\n    \u003cp style=\"margin:0;color:#4e647d;font-size:15px;\"\u003eSM401-4in1 CO \/ H2S \/ CH4 \/ O2 Multi-Gas Sensor Module with RS485 \/ UART \/ Digital Output is prepared for B2B and OEM integration projects in the Multi-Gas Detection Modules category. It is positioned for CO \/ H2S \/ CH4 \/ O2 monitoring using Electrochemical sensing, with RS485 \/ UART \/ Digital interface options depending on configuration.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:18px 0 24px;\"\u003e\n    \u003cdiv style=\"padding:16px;border:1px solid #dbe8f6;background:#fff;\"\u003e\n\u003cspan style=\"display:block;font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:#0d63ce;font-weight:700;\"\u003eProduct family\u003c\/span\u003e\u003cstrong style=\"display:block;margin-top:8px;color:#07182f;font-size:15px;\"\u003eMulti-Gas Detection Modules\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"padding:16px;border:1px solid #dbe8f6;background:#fff;\"\u003e\n\u003cspan style=\"display:block;font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:#0d63ce;font-weight:700;\"\u003eDetected target \/ metric\u003c\/span\u003e\u003cstrong style=\"display:block;margin-top:8px;color:#07182f;font-size:15px;\"\u003eCO \/ H2S \/ CH4 \/ O2\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"padding:16px;border:1px solid #dbe8f6;background:#fff;\"\u003e\n\u003cspan style=\"display:block;font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:#0d63ce;font-weight:700;\"\u003eOutput \/ interface\u003c\/span\u003e\u003cstrong style=\"display:block;margin-top:8px;color:#07182f;font-size:15px;\"\u003eRS485 \/ UART \/ Digital\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"padding:16px;border:1px solid #dbe8f6;background:#fff;\"\u003e\n\u003cspan style=\"display:block;font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:#0d63ce;font-weight:700;\"\u003eSensing principle\u003c\/span\u003e\u003cstrong style=\"display:block;margin-top:8px;color:#07182f;font-size:15px;\"\u003eElectrochemical sensing\u003c\/strong\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch3 style=\"margin:24px 0 10px;font-size:20px;color:#07182f;\"\u003eKey Advantages\u003c\/h3\u003e\n  \u003cul style=\"margin:0;padding-left:20px;color:#324a63;\"\u003e\n\u003cli\u003eDesigned for CO \/ H2S \/ CH4 \/ O2 monitoring in OEM sensor products.\u003c\/li\u003e\n\u003cli\u003eSensing method: Electrochemical sensing.\u003c\/li\u003e\n\u003cli\u003eAvailable signal\/interface options include RS485 \/ UART \/ Digital.\u003c\/li\u003e\n\u003cli\u003eTarget buyers: Industrial gas detector OEMs, environmental monitoring integrators, mining\/tunnel safety equipment makers.\u003c\/li\u003e\n\u003cli\u003eRecommended uses: Four-in-one or multi-gas detection for CO, O2, H2S, CH4 and customizable toxic\/combustible gases.\u003c\/li\u003e\n\u003cli\u003eParameter, wiring, and performance evidence images are mapped for detail-page use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n  \u003ch3 style=\"margin:26px 0 10px;font-size:20px;color:#07182f;\"\u003eTechnical Snapshot\u003c\/h3\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;border:1px solid #dbe8f6;background:#fff;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border-bottom:1px solid #e4edf7;color:#4e647d;width:38%;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border-bottom:1px solid #e4edf7;color:#102238;font-weight:600;\"\u003eSM401-4in1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border-bottom:1px solid #e4edf7;color:#4e647d;width:38%;\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border-bottom:1px solid #e4edf7;color:#102238;font-weight:600;\"\u003e46x46x23mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border-bottom:1px solid #e4edf7;color:#4e647d;width:38%;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border-bottom:1px solid #e4edf7;color:#102238;font-weight:600;\"\u003eSC\/YYS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border-bottom:1px solid #e4edf7;color:#4e647d;width:38%;\"\u003eOrigin\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border-bottom:1px solid #e4edf7;color:#102238;font-weight:600;\"\u003eMainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border-bottom:1px solid #e4edf7;color:#4e647d;width:38%;\"\u003eSensor Category\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border-bottom:1px solid #e4edf7;color:#102238;font-weight:600;\"\u003eGas sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border-bottom:1px solid #e4edf7;color:#4e647d;width:38%;\"\u003eOutput Signal Type\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border-bottom:1px solid #e4edf7;color:#102238;font-weight:600;\"\u003eDigital sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border-bottom:1px solid #e4edf7;color:#4e647d;width:38%;\"\u003eApplication Scenarios\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border-bottom:1px solid #e4edf7;color:#102238;font-weight:600;\"\u003eindustrial,environmental monitoring,industrial automation,automation equipment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 12px;border-bottom:1px solid #e4edf7;color:#4e647d;width:38%;\"\u003eOperating Current\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;border-bottom:1px solid #e4edf7;color:#102238;font-weight:600;\"\u003e0.1A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n  \u003ch3 style=\"margin:26px 0 10px;font-size:20px;color:#07182f;\"\u003eTypical Applications\u003c\/h3\u003e\n  \u003cul style=\"margin:0;padding-left:20px;color:#324a63;\"\u003e\n\u003cli\u003eFour-in-one or multi-gas detection for CO\u003c\/li\u003e\n\u003cli\u003eO2\u003c\/li\u003e\n\u003cli\u003eH2S\u003c\/li\u003e\n\u003cli\u003eCH4 and customizable toxic\/combustible gases\u003c\/li\u003e\n\u003c\/ul\u003e\n\n  \u003cdiv style=\"margin-top:26px;padding:18px;border-left:4px solid #0d63ce;background:#f5f9fd;color:#4e647d;\"\u003e\n    \u003cstrong style=\"display:block;color:#07182f;margin-bottom:6px;\"\u003eSelection note\u003c\/strong\u003e\n    \u003cspan\u003eHigh-value B2B category; present protocol, range and gas combinations clearly.\u003c\/span\u003e\n    \u003cbr\u003e\u003cspan\u003eFor US listings, mark customization options but avoid certification claims without documents.\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"YYS Sensor","offers":[{"title":"UART communication","offer_id":47792675160229,"sku":"SENS-078-01","price":405.0,"currency_code":"HKD","in_stock":true},{"title":"RS485 communication","offer_id":47792675192997,"sku":"SENS-078-02","price":432.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0764\/6049\/0917\/files\/yys-078-first-image-imagen.png?v=1778040078","url":"https:\/\/yyssensor.com\/products\/078-sm401-4in1-co-h2s-ch4-o2-multi-gas-sensor-module-with-rs485-uart-digital-output","provider":"YYS","version":"1.0","type":"link"}