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1,500lb. (680 kg.) holding force

Concealed security for remote access and exit 
control of aluminum and steel doors or gates. 
Works with sliding, single-action, and double-
action (swing-through) doors and gates. Plated 
steel plugs and magnetic bond holds doors 
securely in place with approximately 1,500 pounds 
(680 kg) of shear holding force.

Features:

Concealed security for remote access and exit control of 
aluminum and steel doors or gates.

Smaller size for use with most metal door jambs.

Zinc-plated magnet and armature, aluminum anodized housing.

Works with sliding, single-action, and double-action (swing-
through) doors and gates.

Use with an optional digital keypad for keyless high security.

Easily connects to SECO-LARM’s SK-983A Electronic Keypad.

Spring-loaded locking bolts and magnetic bond holds doors 
securely in place with approximately 1,500 pounds (680kg) of 
shear holding force.

Fail-safe operation (unlocks if power is lost). 

Armature plate adjusts to compensate for gaps between door 
and frame.

Specifications:

SD-993B-SS

Operating Voltage

Current Draw

Door Gap

Weight (Approx.)

12VDC or 24VDC

420mA/12VDC, 210mA/24V

Max. 1/16” (2mm)

2lbs., 8oz. (1.1kg)

SD-993B-SS_Emailb.cdr

®

      

1.949.261.2999 (CA & Int’l)      1.800.662.0800      Fax: 1.949.261.7326
Email: [email protected]      Website: www.seco-larm.com 

16842 Millikan Avenue, Irvine, CA  92606 

The SECO-LARM policy is one of continual development.  For that reason, SECO-LARM reserves the right to change prices and specifications without notice. SECO-LARM is not responsible for misprints.

Dimensions:

7-1/8"  (180 mm)

5-13/16"  (147 mm)

1

1

/

1

6

"

(2

m

m

)

1

"

1

/

16

(2

m

m

)

1

"

5

/

8

(4

m

m

)

MAGNET ASSEMBLY

ARMATURE ASSEMBLY

Locking bolts

Armature
adjustment
screw

Armature
adjustment
screw

Armature  screws
adj ust  to
com pensate   for
the  gap  between
door  and  frame.

Push-off

button

Max. 2mm
gap

SD-993B-SS

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