Catalog > Consumer Electronics > Kits > Various Kits Pulse Heart Rate Module Pulse Heart Rate Module HKD HEART PULSE RATE MODULE Pulse Heart Rate Module 74.35 ZAR inc for 1 Each 0 in Stock Add Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Specifications Board diameter : 16mm Board thickness : 1.6mm (common PCB thickness) LED peak wavelength : 515nm Supply voltage : 3.3v or 5v Output signal type : analog signal Output signal size : 0~3.3v (3.3v power supply) or 0~5v (5v power supply) Current size : ~4ma (5V)