Be able to detect two-channel voltage and display on video. Well-calibrated from factory, accuracy : + - 0. 1V Information displayed with slight black background to ensure customers are able to read the data under bright light 40 display modes provided Record the last displayed position automatically Red LED flash while video signal lost Be able to use multiple OSD modules and monitor multiple voltage Detect current video mode automatically, support NTSC and PAL mode Display operation time automatically, be able to turn off display under T OFF mode Specifications: JST cablex2 OSD system x1