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Smoke Detector, 

i4H-

SM-3S/SH-3SH 

INTRODUCTION 

i4H-

SM-3S/SH-3SH smoke detector is designed to sense smoke that comes into the detector chamber, and to give 

early warning of developing fires by activating 

i4H-

LS-20 alarm system, and its built-in siren as well.

 

Bracket 

Screw A 

Fig. 1

 

 (counter-clockwise) Open 

9V Battery 

Cover Latch 

Fig. 2

 

Fig. 3

 

Mark 2 

LED 

Bottom Box 

Test Button 

Bracket 

Mark 1 

Fig. 5

 

Fig. 4

 

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