Instruction on turning the prk-1u device on

Plug the device in to the electrical grid.
The device is being turned off when the device button (1) is in the position «downward».
Photo 1: The device is turned off.
While doing so, pay attention to the position of the button (2), since depending on it a certain mode of the device would be turned on.
If the button (2) is in the downward position (Photo 2), the device will be turned on in the first mode, if it is in the upward position (Photo 3), the device will be turned on in the third mode.
Photo 2: The first mode is turned on. Button (2) is in the position «downward».
Photo 3: The third mode is turned on. Button (2) is in the position «upward».
If the device was turned on in the third mode (Photo 3), then by switching the button (2) to downward position it is possible to transfer to the first mode of the device operation (Photo 2).
If it is necessary to turn the device on in the second mode, then in order to start it needs to be turned on in the first mode (Photo 2), and then switch the button (2) to upward position (Photo 4).
Photo 4: Turning the second mode on. It is performed from the first mode. Button (2) to the position «upward».
In order to determine the mode of the device operation at the given moment, it is sufficient to take a look at the button of switching the modes (2).
If the button (2) is not glowing, it means that the device is operating in the first mode (Photo 2).
If the button (2) is glowing, the device is operating in the second mode (Photo 4).
If the button (2) is blinking, the device is operating in the third mode. Also, in the third mode, blinking inside the device is visible.