{"product_id":"32637382","title":"Rechargeable SMART SENSOR ST8990 4-in-1 Gas Detector: O₂, LEL, CO, H₂S with LCD Backlight Alarm","description":"\u003cbody\u003e\n\n\n    \u003cmeta charset=\"UTF-8\"\u003e\n    \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n    \u003ctitle\u003eMulti-Gas Meter - Product Description\u003c\/title\u003e\n\n\n    \u003ch2\u003eIntroduction\u003c\/h2\u003e\n    \u003cp\u003eThe Multi-Gas Meter is a portable, handheld device designed for continuous monitoring of four gases: Oxygen (O₂), Combustible Gas (LEL), Carbon Monoxide (CO), and Hydrogen Sulfide (H₂S). It displays all gas concentrations on an LCD screen and allows users to configure high\/low alarms, including STEL\/TWA alarm functions. The device features both audio and visual alerts when gas levels exceed set limits.\u003c\/p\u003e\n\n    \u003ch2\u003eFeatures\u003c\/h2\u003e\n    \u003cul\u003e\n        \u003cli\u003eDetects four gases: Carbon Monoxide (CO), Hydrogen Sulfide (H₂S), Oxygen (O₂), and Combustible Gas (LEL).\u003c\/li\u003e\n        \u003cli\u003eConstructed with premium materials and selected quality electronic components for superior sensitivity and accurate measurement.\u003c\/li\u003e\n        \u003cli\u003ePocket-sized, lightweight, and ergonomically designed, making it easy to carry and use.\u003c\/li\u003e\n        \u003cli\u003eEquipped with a 2500mAh lithium-ion battery that supports 8-hour operation and approximately 6 hours with an external gas sampling pump.\u003c\/li\u003e\n        \u003cli\u003eFeatures a backlight for easy reading in dark environments.\u003c\/li\u003e\n        \u003cli\u003eTwo alarm methods: audio alarm and icon display.\u003c\/li\u003e\n        \u003cli\u003eOffers various functions: gas monitoring, peak value display, low\/high alarm settings, TWA settings, etc.\u003c\/li\u003e\n        \u003cli\u003eIdeal for use in industries such as petroleum, chemical, metallurgy, and refining.\u003c\/li\u003e\n    \u003c\/ul\u003e\n\n    \u003ch2\u003eSpecifications\u003c\/h2\u003e\n    \u003ctable\u003e\n        \u003ctr\u003e\n            \u003cth\u003eBrand\u003c\/th\u003e\n            \u003ctd\u003eSMART SENSOR\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003cth\u003eModel\u003c\/th\u003e\n            \u003ctd\u003eST8990\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003cth\u003eColor\u003c\/th\u003e\n            \u003ctd\u003eYellow\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003cth\u003eMaterial\u003c\/th\u003e\n            \u003ctd\u003eABS\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003cth\u003eCarbon Monoxide Range\u003c\/th\u003e\n            \u003ctd\u003e0～999 ppm\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003cth\u003eHydrogen Sulfide Range\u003c\/th\u003e\n            \u003ctd\u003e0～500 ppm\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003cth\u003eOxygen Range\u003c\/th\u003e\n            \u003ctd\u003e0～30% VOL\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003cth\u003eCombustible Gas Range\u003c\/th\u003e\n            \u003ctd\u003e0～100% LEL\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003cth\u003eOperation Current\u003c\/th\u003e\n            \u003ctd\u003e220 mA\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003cth\u003eShort Circuit Current\u003c\/th\u003e\n            \u003ctd\u003e≤3 A\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003cth\u003eOperation Voltage\u003c\/th\u003e\n            \u003ctd\u003e3.7 V\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003cth\u003eMaximum Open Circuit Voltage\u003c\/th\u003e\n            \u003ctd\u003e≤4.2 A\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003cth\u003eBattery\u003c\/th\u003e\n            \u003ctd\u003eLithium battery\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003cth\u003eBattery Capacity\u003c\/th\u003e\n            \u003ctd\u003e2500 mAh\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003cth\u003eDisplay Type\u003c\/th\u003e\n            \u003ctd\u003eSegment type LCD\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003cth\u003eOperation Humidity\u003c\/th\u003e\n            \u003ctd\u003e15%~95% RH\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003cth\u003eOperation Temperature\u003c\/th\u003e\n            \u003ctd\u003e10℃～50℃\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003cth\u003eStorage Temperature\u003c\/th\u003e\n            \u003ctd\u003e0～40℃\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003cth\u003eItem Size\u003c\/th\u003e\n            \u003ctd\u003e11.45 * 6.44 * 4.45 cm \/ 4.50 * 2.53 * 1.75 in\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003cth\u003eItem Weight\u003c\/th\u003e\n            \u003ctd\u003e200 g \/ 7 oz\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003cth\u003ePackage Size\u003c\/th\u003e\n            \u003ctd\u003e20 * 11 * 7 cm \/ 7.87 * 4.33 * 2.75 in\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003cth\u003ePackage Weight\u003c\/th\u003e\n            \u003ctd\u003e475 g \/ 16.8 oz\u003c\/td\u003e\n        \u003c\/tr\u003e\n    \u003c\/table\u003e\n\n    \u003ch2\u003eNotes\u003c\/h2\u003e\n    \u003cul\u003e\n        \u003cli\u003eThis listing is for the gas monitor only; other accessories are not included.\u003c\/li\u003e\n        \u003cli\u003eMeasurements may vary slightly due to manual measurement.\u003c\/li\u003e\n        \u003cli\u003eItems may appear slightly different in photos due to lighting or other factors; please refer to the actual product.\u003c\/li\u003e\n        \u003cli\u003ePlease read the manual carefully before use.\u003c\/li\u003e\n    \u003c\/ul\u003e\n\n    \u003ch2\u003ePacking List\u003c\/h2\u003e\n    \u003cul\u003e\n        \u003cli\u003e1 Multi-Gas Meter\u003c\/li\u003e\n        \u003cli\u003e1 Manual\u003c\/li\u003e\n        \u003cli\u003e1 USB Cable\u003c\/li\u003e\n    \u003c\/ul\u003e\n\n\u003c\/body\u003e","brand":"Evalm","offers":[{"title":"Default Title","offer_id":46355823198437,"sku":"663254694847","price":85.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/7262\/8453\/files\/E10949EU-1-92a3-OyD4.jpg?v=1732620352","url":"https:\/\/evalm.com\/products\/32637382","provider":"Evalm","version":"1.0","type":"link"}