... display 2, Step-up buzzer alarm 3,Left and right obstacle indication 4,Numeral display from 1.8m to 0.3m 5,Display unit with ... built-in buzzer 6,Buzzer alarm switch:on/off 7,2,3,4 sensors for option8,Display size ... kg /ctnG.W.: 12 kg /ctnMEAS:53*32.3*42cm display: