Bob Dolph’s 2012 Top Technology Picks

I was excited when I saw the new LR100 Series Electric latch retraction kit from Security Door Controls (SDC). The kit enables electric access control and dogging of mechanical exit devices. When energized the motor retracts the exit device latch and pulls the pushpad into the dogged (depressed) position enabling momentary or sustained push and pull operation of the door. The latch retraction mechanism may be activated by an access control, remote control device or building automation system. The device is quiet and has an inrush current of only 450mA with 180mA continuous current. It is designed for use in UL three-hour fire-rated doors as well.