Part One – Your Nighthawk CO Alarm
To in stall:
1. Follow steps 1 - 4 in the previous column under “To Rotate
Adapter.”
2. With adapter out, pull out power cord and unwrap it.
3. With cord extended, press last few inches into cord recess.
Gently pull cord at bottom of cord recess until cord becomes
taught and lays flat in cord recess.
4. Carefully replace back door by making sure “latches” on all
four corners of door are lined up, then firmly
press into place.
5. Insert the screws provided until head is
approx. 1/8” from wall (If mounting in plaster
board or drywall, drill 3/16 hole and use plastic
anchor provided). Use mounting guide template
in backof user’s guide to locate holes.
6. Hook the Nighthawk CO alarm unit over the
screw onto keyhole in back of unit.
7. Plug cord into electrical outlet.Simply follow the above steps for
removing adapter, then instead of mounting to a wall, simply pull
out slide support and stand on table, bedside stand, chest of draw-
ers, etc. (refer to diagram on page 1-1).
Table Top Alarm
You can also use your Nighthawk CO alarm as a table top unit.
Normal Operating Characteristics
When you first power up the unit, the alarm will sound
briefly to let you know the unit is receiving power and that the
alarm circuit is functioning.
You should see three eights on the digital display, indicat-
ing the alarm is in the start-up mode. The three eights will remain
for approximately 20 seconds. You
should see a blinking red dot to the lower
right of the digital display. The blinking
dot shows that the alarm is operating.
Within 20 seconds, your CO alarm will
start monitoring for CO. The number
indicates a measurement of carbon monoxide in parts per million
(ppm). Note: The number will probably be zero (0). This is a
normal condition for most households and shows that no mea-
surable amount of CO has been detected.
The alarm has begun monitoring the air for carbon monoxide and
will continue to do so as long as it receives power.
When the alarm is unplugged or loses power and you
have a good 9V battery installed, the alarm will automati-
cally switch to its battery backup mode and you will notice the
following:
WALL
1/8"
Blinking Dot
1-5
• The digital display will show a blinking dot only – this helps
conserve the battery’s power.
• The digital display will show a number only if it senses
carbon monoxide while in backup mode.
• If CO is detected while on battery backup, alarm pattern
is 4 quick beeps – followed by 5 seconds of silence –
followed by 4 quick beeps. After 4 minutes, alarm pattern
is 4 quick beeps every 60 seconds.
Note: The
alarm
will operate on battery backup for at least 20 hours
.
When AC power is restored, the alarm will automatically switch
back to normal operating mode.
When the alarm is unplugged or loses power and you
have a low battery installed, you will notice the following:
•A fading alarm will sound alerting you the unit has
switched to its backup mode, but the 9V battery is low.
•A blinking dot will be displayed and the sounder will chirp
every 15 seconds.
• When peak level is pushed, the display will alternate
between “Lb.” and CO reading.
When battery is depleted:
•A blinking dot will be displayed and the sounder will chirp
approximately every 30 seconds.
•Pressing the test button will result in a chirp approximately
every one second. The alarm will not detect CO if battery
is depleted. Replace battery.
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