User's Manual
D-302894 SMD-426 PG2, SMD-427 PG2 Installation Instructions 3
detector. See Figures 6 and 7 for recommended mounting locations.
In insect-infested areas. If insects enter a detector's sensing chamber, they may cause a false alarm. Where bugs are a problem, get rid of them before
putting up a detector.
Near fluorescent lights, electrical "noise" from fluorescent lights may cause false alarms. Install smoke detectors at least 1.5 meters (5 feet) from such
lights.
Smoke detection depends on the smoke density present in a room. Smoke density is greater in small rooms, for the same amount of smoke,
than in large rooms.
In small rooms less than 25 cubic meters (883 cubic ft.) in size, a small amount of smoke may activate a smoke alert. For example, smoking or
bathroom steam may activate a smoke alert.
A. BEDROOM
B. AIR RETURN
C. BATH
D. AIR ENTRY
E. STOVE
F. KITCHEN
G. LIVING ROOM
H. CORRECT LOCATION
I. INCORRECT LOCATION
Figure 8. Recommended Smoke Detector Locations to Avoid Air Streams with Combustion Particles
WARNING: Never remove batteries to stop a false alarm. Open a window or fan the air around the detector to get rid of the smoke. The alarm will turn
itself off when the smoke is gone. If false alarms persist, attempt to clean the detector as described in this manual.
WARNING: Do not stand close to the detector when the alarm is sounding. The alarm is loud in order to wake you in an emergency. Too much exposure
to the horn at close range may be harmful to your hearing.
2.4 Audible and Visual Indications
The dual color LED, buzzer and siren are used to signal various alarm and trouble messages as shown in Table 1 below:
Table 1. Visual and Audible Indications
Condition
Visual Indication (LEDs) Audio
Indication (buzzer or siren)
Red Yellow
Smoke alarm Flash every 500ms - 3 long beeps every 4 sec.
Heat alarm(***) Flash every 500ms - 3 long beeps every 4 sec.
Tamper alarm(*) - - Long beep every 2 sec.
Standby Flash every 30 sec. - -
Low battery Flash every 30 sec. - Short beep every 30 sec.
Smoke sensor trouble Flash every 60 sec. 3 Flashes every 60 sec. Short beep every 60 sec.
Low sensitivity alarm Flash every 30 sec.(**) - Short beep every 30 sec.
Heat sensor trouble(***) Flash every 60 sec. 5 Flashes every 60 sec. Short beep every 60 sec.
Need to clean 2 flashes every 30 sec. - 2 short beeps every 30 sec.
Burglar (siren) - - Steady tone
Fire (siren) - - 3 long beeps every 4 sec.
Gas (siren) - - 4 rapid tones every 5 sec.
Flood (siren) - - 1 1-sec. tone every 3 sec.
Test See par. 3 "Smoke Detector Test"
* The tamper alarm will mute for 3 minutes at first power on, and will revert to normal mode when the tamper switch condition is changed.
** Delay of 15 sec. between buzzer beep and LED operation
*** SMD-427 PG2 only
2.5 Battery Connection and Initial Test
Attention: The detector battery cover is fitted with a red button that prevents the detector from locking onto bracket if there is no battery inside.
The smoke detector is supplied with a 3V CR123A / CR17450 battery. Battery connection for both types of batteries is illustrated in Figures 9a and 9b
below.
B
C
D
A
E
A. 3 volts CR123A
B. Open battery cover and connect the battery to its terminals (without
insulator). Verify proper polarity.
C. Battery cover
D. Enroll button
E. Tamper switch
Caution! Risk of explosion if battery is replaced by an incorrect type.
Dispose of used batteries according to the manufacturer's instructions.
Figure 9a. Battery Connection for CR123A