... on the screen 3,alarm by English speech 4,two way video in truck reverse aid systemWe are a manufacturer which is ... :9 3,Resolution: 320(W) x RGB x 240(H) 4,Video input:2 way video 5,Can be connected with ... parking sensors 6,2,4 sensors for option 7,alarm by english speech 8,Display the distance on the screen truck reverse aid ... .0m,1.5m,1.2m,1.0m,9,8,7,6,5,4,stop truck reverse aid system