Barreras Automaticas : 1. 2. of heavy duty 2. full automatic 3. compatible with parking system and computer Barreras Automaticas:Features:1.Arms can be chosen from 3 meters to 6 meters, and beam falling time is also arranged from 1 second to 6 seconds2.In the price list three types can be found, namely quick one, medium speed one and slow one 3.Clutch key can be used to open the clutch when ...