IEC 60601-2-40:2024 applies to the BASIC SAFETY and ESSENTIAL PERFORMANCE of ELECTROMYOGRAPHS and EVOKED RESPONSE EQUIPMENT, hereafter referred to as ME EQUIPMENT. 
The following ME EQUIPMENT are excluded: 
- ME EQUIPMENT intended for therapeutic application; 
- ME EQUIPMENT intended for transcutaneous electrical nerve stimulators and electrical muscle stimulators (ME EQUIPMENT covered by IEC 60601-2-10). 
IEC 60601-2-40:2024 cancels and replaces the second edition published in 2016. This edition constitutes a technical revision. 
This edition includes the following significant technical changes with respect to the previous edition: 
a) added requirements for constant voltage stimulators; 
b) clarified requirements for VISUAL STIMULATORS.

Medical electrical equipment - Part 2-40: Particular requirements for the basic safety and essential performance of electromyographs and evoked response equipment