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- Stock: 100 in Stock
- SKU: 07548
- Delivery Time
- Bulk & B2B RFQ
KY-039 Finger Heartbeat Detection Sensor Module (HW-502)
The KY-039 is a compact and easy-to-use optical heartbeat detection sensor module designed to measure your pulse rate by sensing blood flow changes in a fingertip. It uses an infrared LED and phototransistor pair to detect the subtle variations in light intensity caused by your heartbeat, making it ideal for Arduino, Raspberry Pi, and other microcontroller projects.
Features
- Optical heartbeat detection using infrared (IR) LED and phototransistor detects pulse through fingertip placement.
- Analog output signal that varies with heartbeat, read directly by microcontrollers.
- Compact, lightweight, low-power design ideal for DIY, wearable, or portable projects.
- Simple 3-pin interface (VCC, GND, Signal) compatible with Arduino/Raspberry Pi/ESP boards.
- Breadboard/breadboard-friendly mounting with standard 2.54 mm headers and small board size.
- Visual heartbeat indicator: onboard red LED flashes with each detected pulse.
Specifications
- Model: KY-039 (HW-502)
- Operating Voltage: 3.3 V – 5 V DC
- Output: Analog signal (varies with pulse)
- Interface: 3-pin (VCC, GND, Signal)
- Detection Method: Optical IR (infrared LED + phototransistor)
- Current Consumption: ~2 mA (LED active)
Package Includes
- 1x KY-039 Finger Heartbeat Detection Sensor Module (HW-502)
Warranty Terms :
Branded products (Waveshare/ Raspberry Pi/ Radxa/ DWIN etc) are as per brand warranty terms. Generic products are eligible for replacement within 7 days of delivery based on following conditions.
Products are eligible for a replacement if there is physical damage during transit or a clear manufacturing defect. Any claim for damage/ wrong items/ replacement must be made within 48 hours of successful delivery of the product. Requests for refund of amount or exchange of product(s) will be reviewed on a case by case basis and HUBTRONICS carries final rights to take a final decision on refund, store credit or exchange.
What to take care of ?
Most of our products are technical in nature and require trained personnel to handle them. Any kind of mishandling can result in damage or malfunctioning of the product, it is not possible for us to provide a replacement or refund if the product is damaged due to technical or physical mishandling.
Who pays the return shipping cost?
Free of cost return pickup from delivery address is eligible for products categorized as manufacturing defect/ Damage in transit/ Wrong items delivered. We do not support return pickup for any B2B order or offline orders not placed on website. Buyer need to arrange return shipping for B2B orders.
What voids warranty?
Please note that replacement/ return or refund is not possible if the product is not compatible with your system/application. Please check all the technical details/ dimensions etc. before ordering and contact us for any kind of clarifications.
If product is soldered/ programmed at any point or physically altered in any way, it is not eligible for return/ replacement. If the item requires soldering for testing, please ensure that you use suitable clips or jig to test it without soldering. Any kind of soldering job makes the product ineligible for return or replacement.
Following items are not eligible for return under any circumstances
- Device Programmers / Dongles
- Soldering Consumables (Wire, Flux etc)
