400N wall retainer, with folding support at 90º (150mm) for floor or 180o (175mm) for wall. Rotating plastic fiber reinforced plastic head and red release button. The device releases the door when the 24 VDC voltage is no longer applied. Includes protection and polarization diode and articulated ferromagnetic plate Ref. 960110. Requires 24 VDC 67 mA power.