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SECO-LARM No-Cut Door Strike 

 

 

SECO-LARM U.S.A., Inc.                                                                                   

  

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1.

 

Measure the latch line (see Fig. 1). 
a.

 

Measure the distance between the face of the door 
jamb and the face of the door latch. This is the 
vertical latch distance. 

b.

 

Measure the vertical latch distance on the door jamb 
from the face of the door jamb.  
At that point, draw a vertical line. This is  
the latch line. 

2.

 

Measure the center line (see Fig. 2). 
a.

 

Measure the distance from the floor to the center of 
the door latch. Ignore the location of the deadlatch pin 
when taking measurements. 

b.

 

Measure the same distance as above along the 
inside of the door jamb. This is the center line. 

3.

 

Align the included mounting template to the latch and 
center lines (see Fig. 3). 

4.

 

To mount the strike where the hollow door frame material 
is unsuitable for mounting, install the provided mounting 
tabs (see Fig. 4). 

5.

 

Before installing the door strike, program for either  
fail-safe or fail-secure operation. See "Selecting  
Fail-Safe or Fail-Secure," pg. 2. 

6.

 

Conceal all wires in the door frame. Use two of the 
included machine screws to mount the unit to the 
mounting tabs. Adjust as needed to ensure the door 
closes smoothly (see Fig. 5). 

7.

 

Connect to power. See "Wiring Diagram," pg. 4.  

NOTE

: SD-995C-D3Q has no horizontal or  

vertical adjustments. 

Installation:

 

Fig.4 

Fig.3 

Fig.2 

Fig.1 

Fig.5 

For 24VDC operation: 

Door latch 

Deadlatch pin  

Door jamb 

Vertical latch distance 

Latch Line 

For 12VDC operation: 

12V

  

24V

  

Black Wire 

Red Wire 

White Wire 

12VDC

 

24VDC

 

Wiring Diagram: 

Center line 

 

Door latch 

Door jamb 

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