Spring Stop & Lock locks the doors from falling if a spring breaks
Test-a-Fire closes your fire doors on a firecall automatically and resets them after the firecall
Phantom Fire Edge opens your door if it hits something and signals you if the edge is not working
Sensing Eye sends your door open if the eye is interrupted and signals you if the eye is not working
Approach Sensor sends your door open before a person gets to the opening
Floor Sensor sends your door open before a vehicle gets to the opening
Chain Stop & Lock locks the door from falling is the drive chain breaks
Cable Stop & Lock locks the door from falling is a cable breaks
Signal Light tells you when your door is safe to use