{"product_id":"apogee-instruments-s2-131-red-far-red-sensor","title":"Apogee Instruments - S2-131 Red \/ Far-Red Sensor","description":"\u003cp\u003eThe Apogee S2-131 measures red (645-665 nm) and far-red (720-740 nm) to calculate the R:FR ratio that drives plant morphology, accurate under all light sources including LEDs. Choose the output.\u003c\/p\u003e\u003cp\u003eBoth versions share the same two-band detector; only the output differs.\u003c\/p\u003e\u003ch3\u003eAvailable Options\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eAnalog output (S2-131-SS)\u003c\/li\u003e\n\u003cli\u003eSDI-12 digital output (S2-431-SS)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSeparate red and far-red channels for R:FR ratio\u003c\/li\u003e\n\u003cli\u003eWaterproof, cosine-corrected\u003c\/li\u003e\n\u003cli\u003eNIST-traceable, 4-year warranty\u003c\/li\u003e\n\u003cli\u003eMade in the USA and backed by Apogee's industry-leading warranty and support.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eIdeal Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eR:FR ratio monitoring under LEDs\u003c\/li\u003e\n\u003cli\u003ePhotomorphology and crop steering\u003c\/li\u003e\n\u003cli\u003eFar-red supplementation studies\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Apogee Instruments","offers":[{"title":"Analog","offer_id":52354919629111,"sku":"S2-131-SS","price":529.0,"currency_code":"USD","in_stock":true},{"title":"SDI-12 digital","offer_id":52354919661879,"sku":"S2-431-SS","price":719.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/0341\/5863\/files\/far-red-front__95707.1582300468_bb30ca68-11a6-48fd-af72-21ecff523c30.jpg?v=1780695541","url":"https:\/\/www.blacklabelsupply.io\/products\/apogee-instruments-s2-131-red-far-red-sensor","provider":"BLACK LABEL","version":"1.0","type":"link"}