... warranty COMA QD708 Parking Barrier Road Gate With Competitive Price products show Parameter VoltageAC 220V(110V)Frequency50HZPower180WBoom ... hospitals, villages, shopping marketsDetail show Advantages compared with common barrier NameComa barrierCommon barrierElectric machineAdopt advanced ... Protecting the passenger6. the inductive function ,with the digital vehicle detector7.the movements adopts the ...