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VISUAL-ACOUSTIC SIREN 

SPLZ-1011

 

splz1011_en 08/08 

1. General 

The SPLZ-1011 outdoor visual-acoustic siren is designed for use in burglary and assault 
signaling systems. The signaling function is performed in two ways: visually (by red color 
lamp blinking) and acoustically (by a modulated, high-volume sound signal). A xenon lamp 
(flash) is the source of light, while the sound signal is generated by means of a  piezoelectric 
transducer. The design of the siren housing, as well as its inner enclosure made from 
galvanized sheet, ensure a high degree of tamper protection (against opening, tearing off 
from the base, an attempt to cover the transducer with foam). The electronics board is made 
in SMD technology and protected by impregnation against unfavorable effects of weather 
conditions, thus ensuring high reliability of the equipment. The SPLZ-1011 housing is made 
of the highly impact resistant PC LEXAN polycarbonate, hence it features a high mechanical 
strength and guarantees aesthetic appearance of the siren even after many years of 
operation. 

2. Installation 

The siren should be mounted on a flat base in a location as inaccessible as possible to 
minimize the tampering risk. The device should be attached to the base by means of screws 
and expansion bolts. 

Note:  Keep a clearance of approx. 4.5cm between the upper edge of siren housing and the 

ceiling or other obstacle limiting the mounting position from above. The lack of such 
clearance can make the mounting of housing
 difficult. 

The tamper circuit of the siren protects the device against removal of housing or tearing the 
unit off the wall. For the circuit to operate correctly, the „S” element must be screwed to the 
base. 

The siren is fitted with circuit for signaling the attempts to tamper with the transducer using 
the sealing foam. The circuit can operate independently or be connected in series with the 
device tamper circuit. 

 

 
 
 
 
 
 
 
 
 
 
 

 

 

 

 

 

mounting 
holes 

cable entry 

tamper circuit „S” 
element 
WHILE SCREWING 
TO THE BASE 
KEEP SPECIAL 
ATTENTION! 

In order to avoid 
accidental breaking 
of plastic element. 

screw which blocks housing

 

water drain holes 

– DO NOT PLUG! 

Fig. 1. View of the siren housing

 

antifoam 
element 

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