It means when you are controlling the device for e.g. phone, computer, printer and etc.
It means the battery will operate a device for 8 hours before recharging is needed.
This device can operate within a voltage range of 110-240V.
To operate a push button switch, simply press the button to turn the device on or off. Pressing the button once will toggle the device's power status.
Inflatable PFD
a device that is controlled by you touching the surface of it to operate
You use the touch screen to operate the iPad device.
A motor will operate on 400 volts.
The Network Interface cards
voltmeter
No. Bluetooth and infrared devices operate on separate frequencies.
Device drivers
An Android smartwatch wearer does need an Android device to fully utilize it. It will not operate on an iPhone.