Really a bargain for the money. Monitor has no audio output although the volume keys are in place and are also processed in the operating menu. Although the monitor displays the at FPV fliers so infamous "Blue Screen", but only if any signal stops. Before you can except "noise" anyway no longer see anything. Due to the robust camera thread on the bottom of the LCD can be screwed directly onto tripods. Thus, in conjunction with a radio receiver and a battery quickly tinkered a simple but functional "Ground Station" for FPV flight. The "manual" does not deserve the name, you do not need yes eigendlich also depends, however, a single blue wire from the monitor, which is mentioned in any way. By (risky) Try I have found that changes by applying + 12V operating voltage to this line, the monitor on the AV2 input. After removal of the stress back to AV1. (Very good when used as a monitor for a reversing camera)