Arriving
Questions & answers
Know before you buy
Quick answers about the DS-TVL221-1-6D, and how it compares.
Which barrier gate speed and boom length do I need?
Choose by lane width and traffic. The 520 series comes in three versions: -H with a 3 m boom that opens in about 0.9 s, for busy entrances; -M with a 4 m boom, about 1.5 s; and -L with a 5 to 6 m boom, about 4 s, for wide lanes. For safety add an anti-fall radar or loop so the boom never comes down on a car, and use ANPR cameras or UHF readers to open it automatically. Ask us to plan your gate.