LCN SEM7820 Electromagnetic Fire Door Holder Heavy Duty 12/24V - Floor Mount LightSYS Video Kits Input voltage:DC12~24V

Input voltage:DC12~24V

10-second audio and video messages

Anti‐passback

5e or higher)

Power: 12v

LCN SEM7820 Electromagnetic Fire Door Holder Heavy Duty 12/24V - Floor Mount LightSYS Video Kits Input voltage:DC12~24VFeatures The LCN 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 door. A choice of floor, recessed wall or surface mounted wall magnets are available. All SEM Series magnets are UL listed for smoke barrier or labelled fire doors. Tested and certified under ANSI Standard A156. 15. 7830 is suitable for use