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Can accurately detect the voltage of the two-way and is superimposed on the video signal. Factory calibrated accuracy of up to plus minus 0. 1V. Superimposed display data with shallow black background, to ensure the customers can accurately see in bright light environments or light-colored background of real-time data. The data position mode offers 40 kinds of display options for customers. (Mode number and location of the final can modify) Automatically record customer last option displays the location of power failure is not lost.When the video signal, the red LED flashes to remind.The operation of cascades, superimposed multiple OSD module simultaneously monitor multiple voltage. Automatic detection of video formats, support for NTSC and PAL formats. Automatic display on power since the time in the T OFF mode, you can turn off the display
