... .In case of power failure,the barrier is supplied with an emergency release;whi automatic parking barrier,BS-806(AC) / BS-806(DC ... from 3 meters to 6 meters. 3.This type of barrier could match with direct boom( pole), fold boom Or fence ... process is soft without any noise and shaking. 6.This barrier gate has many input terminals for photocell, Airwave switch, loop ...