Approved actuator technology for high performance use. This explains the new stronger version of our Folding Arm² door opener with its increased opening force of 500 N. In use with normal doors which will be opened by hand all day, 300 N push force of the standard EA-KL²-T are enough and save with less current of 1.2 A additional costs for the control panel. The EA-KL²-T-50 has a stronger arm and is designed for the opening of heavy doors for the escape and the income of fresh air for smoke exhaust. The current is 2.0 A.