As used in this publication, user or industrial devices that are connected to the internet. IoT devices include sensors, controllers, and household appliances.
Source(s):
NIST SP 1800-16B
NIST SP 1800-16C
The network of devices that contain the hardware, software, firmware, and actuators which allow the devices to connect, interact, and freely exchange data and information.
Source(s):
NIST SP 800-172
under internet of things