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SECO-LARM Electro-Mechanical Latch 

2

 

SECO-LARM U.S.A., Inc. 

The SD-231-ND1Q Electro-Mechanical Latch is designed for pedestrian gates or doors and can be 
triggered by an access control system, by key from outside, or by manually turning the knob from 
inside. It can be mounted on both in-swing and out-swing doors, and is also non-handed.

 

1x Lock body 

1x Strike body 

1x Key plate 

1x Key guard 

1x Cylinder lock 

3x Keys 

8x  M5 Self-tapping screws 

4x  M3 Self-tapping screws

 

2x Long screws 

2x  Lock body cover screws 

1x  Mounting template 

1x  Manual 

Operating voltage 

12VDC 

Current draw 

Standby 0A@12VDC 
Active 3A@12VDC 

Maximum 

Static strength 

2,250-lb (1,020kg) 

Endurance 500,000 

cycles 

(factory tested) 

Operating temperature 

-40

°

~122° F (-40

°

~50° C) 

Dimensions 

Lock Body 

5

1

/

8

"x3

15

/

16

"x1

11

/

16

" (130x100x43 mm)  

Strike Body 

1

7

/

16

"x3

15

/

16

"x1

5

/

8

" (36x100x41 mm) 

Specifications:  

Overview:  

Introduction:  

Parts List:  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Long screws 

Key plate  

Key guard 

Cylinder lock 

Lock body 
(cover removed) 

M3 Self-tapping screw 

M5 Self-tapping 

screw 

Sample Installation: 

Door frame 

Inside 

Outside 

Inside 

Outside 

Door frame 

Door 

In-swing gate/door 

Out-swing gate/door 

Fig. 1 

Door 

NOTE: 

For in-swing gates/doors, mount the lock body on the door. For out-swing doors, mount the 

lock body on the gate/door frame. Note the offset mounting so that the strike pin clears the 
frame/gate when opening (see Fig. 1).

 

Summary of Contents for SD-231-ND1Q

Page 1: ...th manual override Fully mechanical can be unlocked if power is lost Unlocks from outside with included keys Easy to install on existing gates doors Compatible with access control devices Can be installed on left right in swing and out swing gates doors 2 250 lb 1 020kg Static strength ...

Page 2: ... draw Standby 0A 12VDC Active 3A 12VDC Maximum Static strength 2 250 lb 1 020kg Endurance 500 000 cycles factory tested Operating temperature 40 122 F 40 50 C Dimensions Lock Body 51 8 x315 16 x111 16 130x100x43 mm Strike Body 17 16 x315 16 x15 8 36x100x41 mm Specifications Overview Introduction Parts List Long screws Key plate Key guard Cylinder lock Lock body cover removed M3 Self tapping screw ...

Page 3: ...ite side of the door so that the cylinder lock s flat pin can be inserted into the lock body NOTE The cylinder lock s flat pin and long screws used to secure the cylinder lock as noted below should be cut to the appropriate length before they are installed 5 Secure the cylinder lock in place with the two long screws see Fig 4 6 Remove the cover of the lock body by unscrewing the two screws on the ...

Page 4: ...ited to the repair or replacement of any defective part if the unit is returned transportation prepaid to SECO LARM This Warranty is void if damage is caused by or attributed to acts of God physical or electrical misuse or abuse neglect repair or alteration improper or abnormal usage or faulty installation or if for any other reason SECO LARM determines that such equipment is not operating properl...

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