ALT Codes for Electrotechnical & Power Symbols. Below is the complete list of Windows ALT key numeric pad codes for electrotechnical & power symbols, their corresponding HTML entity numeric character references and, when available, their corresponding HTML entity named character references. If you are new to ALT codes and need detailed instructions on how to use them, please read How to Use ALT Codes to Enter Special Characters.
See more symbol sets for popular ALT codes at ALT Codes for Miscellaneous Symbols.
For the the complete list of the first 256 Windows ALT Codes, visit Windows ALT Codes for Special Characters & Symbols.