From Dortronics Systems, programmable mantraps include 4200 series power supplies, 1100 series magnetic locks, 7600 annunciator series and 6510 emergency pull stations. The systems enhance security by making it difficult to forcibly enter a secured area through a single door access point; provides security personnel with time to evaluate the person in the mantrap before granting access; and allows entry of any one person at a time. Dortronics