Siemens SIMATIC IOT2040 - Page 60

List of abbreviations
SIMATIC IOT2020, SIMATIC IOT2040
60 Operating Instructions, 10/2016, A5E37656492-AB
RxD
Receive Data
Data transfer signal
SELV
Safety Extra Low Voltage
Safety extra low voltage
UEFI
Unified Extensible Firmware
Interface
UL
Underwriters Laboratories Inc.
US organization for testing and certification
according to national or binational standards.
USB
Universal Serial Bus