Heart Rate Monitor

OHRM 3D ModelWe are excited to announce that EWH's new Optical Heart Rate Monitor (OHRM) Kit is available for online orders. The circuit measures the heart rate through the subject’s fingertip and shows the cardiac frequency through a blinking light. The product teaches students principles of electronics and biomedical engineering through hands-on learning and is ideal for middle/high school and college students, or for students training for careers in electronics, BMET, and healthcare occupations. The kit includes a bare board and electronics components, which can be reused for multiple assemblies.

Engineering World Health’s Optical Heart Rate Monitor Kit is an educational tool only and is not to be used for any other purpose, including any medical, diagnostic or other laboratory applications.





For more information, send an email to kits@ewh.org, or order from our website using the Order Form.

Click here to download the Optical Heart Rate Monitor Assembly Instructions.

Click here to download the Optical Heart Rate Monitor Laboratory Activities Handbook.

Click here to download the Optical Heart Rate Monitor Laboratory Activities Handbook - Answer Key.

Looking for a soldering kit to help you get started? Try this one:


Don't need a whole soldering kit? We've got more options in our Amazon store: https://www.amazon.com/shop/engineeringworldhealth. EWH is an Amazon Affiliate - we earn a small percentage from qualifying purchases. Buying from our Amazon store helps support this program!

Optical Heart Rate Monitor Kit Pricing:


Unit Price

EWH Chapters and

K-12 Educators

Unit Price

Additional Kit Information




• Kit Packaging Dimensions:  8-5/8 x 5-3/8 x 1-5/8 inches (flat rate box) 

• Shipping Weight: 7.2 ounces (including the box)

• Kit does not include batteries

• Domestic Shipping (U. S. only)

• Delivery time: 2 weeks










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Returning EWH Kits: You are welcome to keep EWH Kits; however, if you would like to help improve training and education in low-resource settings, return assembled kits to the EWH address below.  

Engineering World Health
Attn: Kits
331 West Main Street, Suite 511
Durham, NC 27701