... x 240(H) 4,Video input:2 way video 5,Can be connected with the camera and parking sensors 6,2,4 sensors for option 7 ... °CAlarm typeSpeaker (English speech)alarm volume65dBSpeech report2.0m,1.5m,1.2m,1.0m,9,8,7,6,5 ... 4,stop Quality Assurance:1.Waterproof test2.Temperature test3.Shockproof test4.Aging testProduct certificate: CE & FCCAfter- sale service: one year warranty truck video parking sensor system ...