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The LCN 4040SE Sentronic Door Closer is a heavy duty, non-handed, non-sized closer/holder designed to provide single point hold-open for fire and smoke barrier doors. The door is held open until current interruption releases the holding mechanism and the door closes. Single lever (track) arm closer is specifically designed for interior doors. Choice of finishes, track functions, and installation accessories meet virtually all life safety requirements.  The SE stands for Single Point Electronic, with this closer the hold open point can only be one point, so the closer has to be positioned on the door to get the proper hold open point.

This technology has been around since 1972, but back then you would order the 4110SE or 4010SE.  These were  application specific closers, so you had to specify the hand of the door, door size,  and the type of mounting.  If you do have an older version, the 4040SE will replace it.

LCN Sentronic Door Closer 4414ME

Standard LCN Sentronic Door Closer 4410ME series closer shipped with a 24V or 120V cylinder (please specify) on a mounting plate, metal cover, regular arm, and wood and machine screw pack. Sized cylinders for interior doors to 4’0”. Functions as full rack and pinion door closer when hold-open is not engaged or current is interrupted. Handed for right or left swinging door. Concealed or exposed electrical connections. Built-in “On/Off” switch controls hold-open function. Interfaces with fire alarm systems.

LCN SENTRONIC DOOR CLOSER 4410ME parts are also available.

The 4311HSA SENTRONIC is an electrically controlled closer/holder designed to provide easy passage for groups of pedestrians through high traffic doors. Pedestrians, moving through the doorway, trigger the built-in scanner. When the door is opened to 80° or more, the door is electrically held open to minimize wear and tear on applied door hardware. After the last pedestrian in a group passes through the doorway, the system timer releases the hold-open, closing the door under control of the heavy duty closer. Single lever (track) arm closer is specifically designed for pull side mounting. Choice of finishes and accessories meet virtually all high traffic installation requirements.

The 4412HSA SENTRONIC® is an electrically controlled closer/holder designed to provide easy passage for groups of pedestrians through high traffic doors. Pedestrians, moving through the doorway, trigger the built-in scanner. When the door is opened to 80° or more, the door is electrically held open to minimize wear and tear on applied door hardware. After the last pedestrian in a group passes through the doorway, the system timer releases the hold-open, closing the door under control of the heavy duty closer. Double lever arm closer is specifically designed for push side mounting. Choice of finishes and accessories meet virtually all high traffic installation requirements.

LCN Sentronic Door Closer 4310ME

Standard LCN Sentronic Door Closer 4310ME series closer shipped with a 24V or 120V cylinder (please specify) on a mounting plate, metal cover, Swing-Free arm, track, track roller, and wood and machine screw pack. See 4310ME Series pages 23 & 24 for options. Sized cylinders for interior doors to 4’0”. Functions as full rack and pinion door closer when hold-open is not engaged or current is interrupted with Swing-Free arm engaged. Handed for right or left swinging door. Concealed or exposed electrical connections. Built-in “On/Off” switch controls hold-open function. Swing-Free arm allows door to be moved without door closer resistance. Interfaces with fire alarm systems. LCN Sentronic Door Closer 4310ME part are also available.