{"id":8034512666804,"title":"3 Pack KY-039 Finger Heartbeat Measurement Sensor Module Finger Heartbeat Module","handle":"3-pack-ky-039-finger-heartbeat-measurement-sensor-module-finger-heartbeat-module","description":"\u003ch3\u003e3 Pack KY-039 Finger Heartbeat Measurement Sensor Module Finger Heartbeat Module\u003c\/h3\u003e\r\n\u003cp id=\"b\"\u003eThis project uses bright infrared (IR) LED and a phototransistor to detect the\r\npulse of the finger, a red LED flashes with each pulse. Pulse monitor works as\r\nfollows: The LED is the light side of the finger, and phototransistor on the\r\nother side of the finger, phototransistor used to obtain the flux emitted,\r\nwhen the blood pressure pulse by the finger when the resistance of the\r\nphototransistor will be slight changed. We chose a very high resistance\r\nresistor R1, because most of the light through the finger is absorbed,it is\r\ndesirable phototransistor sensitive enough.Resistance can be selected by\r\nexperiment to get the best results. The most important is to keep the shield\r\nstray light into the phototransistor. For home lighting that is particularly\r\nimportant because the lights at home mostly based 50HZ or 60HZ fluctuate, so\r\nfaint heartbeat will add considerable noise.\u003c\/p\u003e \r\n\r\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\r\n \u003cul class=\"a\"\u003e\r\n \u003cli\u003eFinger Measuring Heartbeat Sensor Module\u003c\/li\u003e\r\n \u003cli\u003ePackage Include: 3 Pack Module\u003c\/li\u003e\r\n \u003c\/ul\u003e","published_at":"2026-02-28T19:36:06+11:00","created_at":"2026-02-28T19:36:03+11:00","vendor":"HUABAN","type":"Proximity Sensors","tags":["industrial_selected_Nov2025"],"price":8900,"price_min":8900,"price_max":8900,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":44154541736116,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"B07869C43V","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"3 Pack KY-039 Finger Heartbeat Measurement Sensor Module Finger Heartbeat Module","public_title":null,"options":["Default Title"],"price":8900,"weight":15,"compare_at_price":null,"inventory_management":"shopify","barcode":"XW-1065","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}],"images":["\/\/auspowers.com\/cdn\/shop\/files\/B07869C43V.jpg?v=1775786894"],"featured_image":"\/\/auspowers.com\/cdn\/shop\/files\/B07869C43V.jpg?v=1775786894","options":["Title"],"media":[{"alt":"[Australia - AusPower] - 3 Pack KY-039 Finger Heartbeat Measurement Sensor Module Finger Heartbeat Module ","id":32724163494068,"position":1,"preview_image":{"aspect_ratio":1.0,"height":1500,"width":1500,"src":"\/\/auspowers.com\/cdn\/shop\/files\/B07869C43V.jpg?v=1775786894"},"aspect_ratio":1.0,"height":1500,"media_type":"image","src":"\/\/auspowers.com\/cdn\/shop\/files\/B07869C43V.jpg?v=1775786894","width":1500}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003e3 Pack KY-039 Finger Heartbeat Measurement Sensor Module Finger Heartbeat Module\u003c\/h3\u003e\r\n\u003cp id=\"b\"\u003eThis project uses bright infrared (IR) LED and a phototransistor to detect the\r\npulse of the finger, a red LED flashes with each pulse. Pulse monitor works as\r\nfollows: The LED is the light side of the finger, and phototransistor on the\r\nother side of the finger, phototransistor used to obtain the flux emitted,\r\nwhen the blood pressure pulse by the finger when the resistance of the\r\nphototransistor will be slight changed. We chose a very high resistance\r\nresistor R1, because most of the light through the finger is absorbed,it is\r\ndesirable phototransistor sensitive enough.Resistance can be selected by\r\nexperiment to get the best results. The most important is to keep the shield\r\nstray light into the phototransistor. For home lighting that is particularly\r\nimportant because the lights at home mostly based 50HZ or 60HZ fluctuate, so\r\nfaint heartbeat will add considerable noise.\u003c\/p\u003e \r\n\r\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\r\n \u003cul class=\"a\"\u003e\r\n \u003cli\u003eFinger Measuring Heartbeat Sensor Module\u003c\/li\u003e\r\n \u003cli\u003ePackage Include: 3 Pack Module\u003c\/li\u003e\r\n \u003c\/ul\u003e"}