Download the User Manual Here
1.) To turn the screen ON: Slip the switch on the battery compartment to ON --> Long press the "On/Off" button at the back of the screen.
2.) To turn the screen OFF: Long press the "On/Off" button at the back of the screen --> Slip the switch on the battery compartment to OFF if you wish to cut the power from the batteries completely.
IMPORTANT NOTE: When shutting the device down, make sure to first long press the "On/Off" button at the back of the screen (screen will turn off) BEFORE slipping the switch on the battery compartment to OFF to cut the power supply so the system will be able to save the captured photo(s) and/or the recorded video(s) properly. Otherwise, the photo and the video file(s) will be compromised or get corrupted as a result.
3.) To connect the IR Image Acquisition Device to the HD screen, please refer to the image below.