{"product_id":"smoke-detector","title":"Smoke Detector","description":"\u003cp\u003eThis \u003cstrong\u003esimple smoke detector\u003c\/strong\u003e is a highly sensitive but inexpensive device. It uses a Darlington-pair amplifier employing two NPN transistors and an infrared photo-interrupter module as the sensor. The circuit gives an audio-visual alarm whenever thick smoke is present in the environment.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSensor Base Smoke Detector\u003c\/strong\u003e enters the gap, the IR rays falling on the phototransistor are obstructed. As a result, the phototransistor stops conducting and the Darlington-pair transistors conduct to activate the buzzer and light-up LED.\u003c\/p\u003e\n\u003cp\u003eWhen the \u003cstrong\u003eSmoke Detector\u003c\/strong\u003e in the gap is cleared, light from the IR LED falls on the phototransistor and it starts conducting. As a result, Darlington-pair transistors stop conducting, and the buzzer and LED turn off. For maximum sensitivity, adjust presets are used to control the sensitivity of the photo-interrupter module.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003eBlock Diagram\u003c\/h3\u003e\n\u003cdiv id=\"p_info\" style=\"text-align: start;\"\u003e\u003cimg border=\"0\" alt=\"Smoke-Detector-BLOCK-DIAGRAM\" src=\"https:\/\/i.postimg.cc\/wTsv0W2T\/LGKT105_a.jpg\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003ePhysical Attributes\u003c\/h3\u003e\n\u003cdiv id=\"p_info\"\u003e\n\u003cul class=\"pro-ds\"\u003e\n\u003cli\u003eDimensions (cm) L x W x H : 20 x 15 x 5\u003c\/li\u003e\n\u003cli\u003eWeight (gm): 200\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003eProduct Video\u003c\/h3\u003e\n\u003cdiv id=\"p_video\"\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/6rmErwU5E-k\" height=\"400\" width=\"800\" allowfullscreen=\"\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" frameborder=\"0\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003cdiv id=\"p_video\"\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/Fp37DPZVdRI\" height=\"400\" width=\"800\" allowfullscreen=\"\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" frameborder=\"0\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"KitsGuru","offers":[{"title":"DO IT YOURSELF KIT","offer_id":40708889215157,"sku":"LGKT105","price":249.0,"currency_code":"INR","in_stock":false},{"title":"READY TO USE KIT","offer_id":40708889182389,"sku":"LGKT105_R","price":499.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0587\/2130\/4757\/products\/smoke-detector-alarm-project.jpg?v=1633435334","url":"https:\/\/kitsguru.com\/es\/products\/smoke-detector","provider":"KitsGuru","version":"1.0","type":"link"}