... 4sec to 6sec; A variety of caseworks can be suitable for different environment and places.2. Adoption of Hall photoelectric detecting ... , integrating with light,electro, mechanism, its conenient for operation , safe and reliable;4. Driven system owns dual self-locking function, which ensure ... type: -10C--+50CLow temperature type: -40C---60C Folding traffic barrier(car parking barrier, barrier gate)