IEC TS 61496-4-3:2015(E) specifies requirements for the design, construction and testing of electro-sensitive protective equipment (ESPE) designed specifically to detect persons or parts of persons as part of a safety-related system, employing vision-based protective devices (VBPDs) using stereo vision techniques (VBPDST) for the sensing function. Special attention is directed to features which ensure that an appropriate safety-related performance is achieved. <br /><br />This publication is to be read in conjunction with <a href='https://webstore.iec.ch/publication/5500'>IEC 61496-1:2012</a>.