Electrically Operated Door Holders

The SEM7820 LCN Electro Magnetic Door Holder features a metal die cast housing that is surface mounted on the floor. Tri-voltage design works with 12, 24 or 120 volts, with 35 lbs. of holding force. The magnet housing measures 5-1/8" long x 4-9/16" wide and 3-7/16" high. The armature (door mount part) is 1-11/16" wide by 2-3/8" high with a 1-7/8" diameter. The armature projects out 1-5/8". The total projection of both pieces is 6-3/4". Available in an aluminum or dark bronze color.  Armature extensions are available, along with replacement covers, magnets, and armatures.

LCN Part # SEM7820

The SEM7850 LCN Electro Magnetic Door Holder features a metal die cast housing that is surface wall mounted. Tri-voltage design works with 12, 24 or 120 volts, with 35 lbs. of holding force. The magnet housing measures 2-13/16" wide by 4-5/8" high. The armature (door mount part) is 1-11/16" wide by 2-3/8" high with a 1-7/8" diameter. The armature projects out 1-5/8". The total projection of both pieces is 3-5/8". Available in an aluminum or dark bronze color.   Armature extensions are available, along with replacement covers, magnets, and armatures.  Outlet box not included

LCN Part # SEM7850

The SEM7830 LCN Electro Magnetic Door Holder features a die cast metal housing that is surface wall mounted. Tri-voltage design works with 12, 24 or 120 volts, with 35 lbs. of holding force. The magnet housing measures 2-13/16" wide by 4-5/8" high. The armature (door mount part) is 1-11/16" wide by 2-3/8" high with a 1-7/8" diameter. The armature projects out 1-5/8". The total projection of both pieces is 4-1/8". Available in an aluminum or dark bronze color.  Armature extensions are available, along with replacement covers, magnets, and armatures.

The SEM7840 LCN Electro Magnetic Door Holder features a metal die cast housing that is surface wall mounted. Tri-voltage design works with 12, 24 or 120 volts, with 35 lbs. of holding force. The magnet housing measures 2-13/16" wide by 4-5/8" high. The armature (door mount part) is 1-11/16" wide by 2-3/8" high with a 1-7/8" diameter. The armature projects out 1-5/8". The total projection of both pieces is 2-5/8". Available in an aluminum or dark bronze color.  Armature extensions are available, along with replacement covers, magnets, and armatures.  Outlet box not included

LCN Part # SEM7840

SEM7850-828 Armature for LCN Electro Magnetic Door Holder features a metal die cast construction armature. The armature (door mount part) is 1-11/16" wide by 2-3/8" high with a 1-7/8" diameter. The armature projects out 2-5/8". Available in an aluminum or dark bronze color.  Armature extensions are available, along with replacement covers, magnets, and armatures.

LCN SEM7850-515 Magnet Hardware Package is used to mount the Armature or the Door Mounted part of the Magnetic Door Holders.   If you are currently using LCN door holders, you will not need to purchase this.   However, if you are using another brand and they have gone missing, you will need to purchase this component.

The SEM7830-516 LCN Magnet Core Assembly is just the Tri Voltage Magnet Core. 35 pounds of holding force at nominal input voltage. Maximum current draw is .020 A @ 24 volt and 120 volt, and .030 A @ 12VDC.

LCN part number SEM7830-516

The SEM7840-516 LCN Magnet Core Assembly is just the Tri Voltage Magnet Core. 35 pounds of holding force at nominal input voltage. Maximum current draw is .020 A @ 24 volt and 120 volt, and .030 A @ 12VDC. Cylinder is 1-3/4" diameter and projects out 7/8" out from the mounting plate.

LCN part number SEM7840-516

The SEM7830-516 LCN Magnet Core Assembly is just the Tri Voltage Magnet Core. This core is used on the Floor Mounted SEM7830.  It has 35 pounds of holding force at nominal input voltage. Maximum current draw is .020 A @ 24 volt and 120 volt, and .030 A @ 12VDC.

LCN part number SEM7820-516

SEM Parts Manual

The SEM-7800-825 Armature for LCN Electro Magnetic Door Holder is the door mounted piece for th LCN SEM7820-825 / SEM7830-825 / SEM7840-825 / SEM7870-825 series.  It features a metal die cast construction armature. The armature (door mount part) is 1-11/16" wide by 2-3/8" high with a 1-7/8" diameter. The armature projects out 1-5/8". Available in an aluminum or dark bronze color.  LCN Part # SEM7820-825, SEM7830-825, SEM7840-825, and SEM7870-825

The SEM7800 LCN Electro Magnetic Door Holder Metal Cover is constructed of a metal die cast. This cover will work on the SEM7830, SEM7840 and SEM7850. Available in aluminum and dark bronze finishes.

LCN Part # SEM7830-72, SEM7840-72 and SEM7850-72

The SEM7810-514 LCN Ball Pivot Connection Link Coupler Assembly Kit, is required for each door needing extension(s). Kit includes coupler link and ball pivot (alone serves as an 1-1/2" extenison). The threaded end is 3/8-16.

LCN Part # SEM7810-514

Product Description & Features
• Concealed Wiring
• Total Floor Space Required:
6-5/8" (168mm)
• Mounting Requirements: Conduit
connects directly to floor plate
• UL listed door holder

Product Description & Features
• Total Projection: 4-1/8" (105mm)
• Mounting Requirements:
1-1/2" (38mm) deep adapter housing
• UL listed door holder

Product Description & Features
• Total Projection: 3-5/8" (92mm)
• Mounting Requirements:
2" x 4" x 1-3/4" (51 x 102 x 45mm)
outlet box
• Wall must be properly reinforced and
outlet box adequately fastened
• UL listed door holder

Product Description & Features
• Total Projection: 1-13/16" (46mm)
• Mounting Requirements:
2" x 4" x 2-1/2" (51 x 102 x 64mm) outlet box
• Wall must be properly reinforced and outlet box
adequately fastened
• UL listed door holder

Product Description & Features
• Total Projection: 2-5/8" (67mm)
• Mounting Requirements:
2" x 4" x 1-3/4" (51 x 102 x 45mm)
outlet box
• Wall must be properly reinforced and
outlet box adequately fastened
• UL listed door holder

The Rixson 998 and 997 Magnet Assembly and Bracket is the replacement magnetic coil for the 998 and 997 Rixson Electro Magnetic Holders.

Rixson Part # 998369