The Sentronic SEM7800 Series are heavy duty, electrically controlled door holding magnets. Magnets are fail safe and hold until the current is interrupted. A manual door closer is used to control and close the doors. A choice of floor, recessed wall or surface wall mounted magnets are available.
SEM7840-516 689 LCN Electromagnetic Door Holders
SEM Series 7840 Grade 1 Magnet Core Assembly, Aluminum Painted Finish
$199.08