An automatic door closer (more often called a "door opener") opens the door itself, typically under the control of a push button, motion detector or other device, and then closes it as well, typically employing a motion or proximity detector to determine when it is safe to close the door.
Specifications:
Material: cast aluminum
Color: silver
Suitable door weight: 45-70 kg
Function: 2 speed adjustment
Composition: 165 x 19mm
Suitable door width
Density adjustment: fixed density
Features:
Work with any type of doors - wood / metal or indoor / outdoor
Two independent control valves control sweep and latch speeds, and set the speed quickly or slowly by itself.
Universal installation for right or left hinge doors up to 180 °