The unit includes red, yellow, and green tally markers to indicate program, preview, and other sources, as well as next selected effect. The mixer, 2 monitors and the monitor mount kit are included with this kit.
 
https://www.bhphotovideo.com/c/product/595435-REG/Datavideo_SE_500_KIT_PAL_SE_500_KIT_PAL_Digital.html