... Hot sales !!! 2011 new style automatic boom barrier for parking system Technology parameters:Gear motor power: 180WPower voltage: AC220 + 5% ... speed running, running, is in place, ensure brake rod slow running won't wobble.4.The connecting rod type transmission ... stable performance, complete specifications;6.Pole with diversification,rise and fall is stable.7.An elegant appearance, color box, warmth, ...