{"product_id":"aurora-handheld-air-quality-logger-dm509","title":"Aurora Handheld Air Quality Logger DM509","description":"\u003cp\u003eThe Aurora store offers the Dienmern DM509 for indoor use. Aurora is the storefront; this is the manufacturer’s published model, not an Aurora-designed original. The Dienmern DM509 is a handheld air-quality logger, listed at 164 × 74 × 26 mm and 233 g. It measures carbon dioxide (NDIR, 400–5000 ppm), PM1.0\/PM2.5\/PM10, electrochemical formaldehyde, semiconductor TVOC, AQI, temperature, and humidity. It can store up to 4,000 records in CSV format, then overwrites the oldest entries. A 1500 mAh battery charges over Micro USB. This is a portable indicator with data export, not a medical instrument.\u003c\/p\u003e\u003ch3\u003eBest for\u003c\/h3\u003e\u003cp\u003eSpot checks and short logging sessions you can carry between rooms, then export CSV. Not a nightstand display and not a wall panel.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cp\u003eThe following details are stated according to the manufacturer. They have not been independently tested by Aurora. Fields not given on the official page are omitted.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHandheld unit measuring CO2, PM2.5, PM1.0, PM10, HCHO, TVOC, AQI, temperature, and humidity\u003c\/li\u003e\n\u003cli\u003eCO2: NDIR, 400–5000 ppm; PM: laser scattering, 0–999 µg\/m³\u003c\/li\u003e\n\u003cli\u003eHCHO: electrochemical; TVOC: semiconductor\u003c\/li\u003e\n\u003cli\u003eInternal storage up to 4,000 records, default CSV; older records are overwritten after 4,000, as stated\u003c\/li\u003e\n\u003cli\u003ePower: 1500 mAh rechargeable battery, Micro USB charging\u003c\/li\u003e\n\u003cli\u003eSize: 164 × 74 × 26 mm; weight 233 g\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePower and connectivity\u003c\/h3\u003e\u003cul\u003e\u003cli\u003ePower: 1500 mAh rechargeable battery, Micro USB charging\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eLimitations\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eThis is an indoor air or climate monitor, not a medical device, and not a life-safety smoke or carbon monoxide alarm.\u003c\/li\u003e\n\u003cli\u003eHousing color is not confirmed on this listing, because the manufacturer page text and official photo do not agree.\u003c\/li\u003e\n\u003cli\u003eInternal storage is listed as up to 4,000 records in CSV, with older records overwritten after 4,000.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch4\u003eWhat does this model measure?\u003c\/h4\u003e\u003cp\u003eAccording to the manufacturer, it displays carbon dioxide (CO2), temperature, humidity, PM2.5, PM10, PM1.0, formaldehyde (HCHO), TVOC and AQI.\u003c\/p\u003e\u003ch4\u003eDoes it use Wi-Fi or an app?\u003c\/h4\u003e\u003cp\u003eThe official manufacturer page does not list Wi-Fi, app, or Matter connectivity for this model.\u003c\/p\u003e\u003ch4\u003eIs this a medical or life-safety device?\u003c\/h4\u003e\u003cp\u003eNo. It is an indoor air or climate monitor. It is not a medical device and is not a smoke or carbon monoxide life-safety alarm.\u003c\/p\u003e\u003ch3\u003eManufacturer\u003c\/h3\u003e\u003cp\u003eShenzhen Langdeli Technology Co., Ltd. (Dienmern), model DM509. Official product information: \u003ca href=\"https:\/\/www.dienmern-instrument.com\/portable-co2-detector-data-export-download.html\"\u003ehttps:\/\/www.dienmern-instrument.com\/portable-co2-detector-data-export-download.html\u003c\/a\u003e.\u003c\/p\u003e","brand":"Dienmern","offers":[{"title":"Default Title","offer_id":68524130730205,"sku":"DM509","price":129.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0865\/3248\/9437\/files\/ec83778f-b116-4e0f-895d-999f469fe732_1c6dd4c4f334.png?v=1794470560","url":"https:\/\/auroraair.shop\/products\/aurora-handheld-air-quality-logger-dm509","provider":"Aurora","version":"1.0","type":"link"}