What is the sleep wake button on ipad?

The Sleep/Wake button on the iPad is one of the device's few buttons that has a number of uses past just locking the device or waking it up. Because this button is used to put the iPad into a suspended mode, the Sleep/Wake button is sometimes referred to as the suspend button or the hold button, but also the lock and power button. read more

Top button (iPhone SE and earlier, iPad, iPod touch): Press to wake your device or put it to sleep. Press and hold the button to turn your device off or on. Ring/Silent (iPhone only): Use to mute sounds and alerts on your iPhone. read more

Sleep/Wake button: This button is used to put your iPad’s screen to sleep or to wake it up. It’s also how you turn your iPad on or off. To put it to sleep or wake it up, just press the button. To turn it on or off, press and hold the button for a few seconds. read more