Window Opener with Temperature Controlled Hold Open Track

Performance
There is no need to connect the power supply(normally open state). In case of fire, when the temperature reaches
68 +5 degrees, the fire doors and Windows can be smoothly closed by themselves and the fire doors and Windows can be manually released to close the fire doors and Windows.Open the window to stop a Angle can adjust freely between 0° and 90°
Strength grade: 35kg/50kg is available.Apply to steel fire doors and Windows, wood fire doors and Windows, stainless steel fire doors and Windows, glass fire doors and Windows.