X-Sense 10-Year Sealed Battery Combination Smoke and Carbon Monoxide Alarm
2-IN-1 Smoke + CO Alarm SC03
The LED indicator flashes GREEN to indicate the following three working modes (no beeps):
Standby Mode: flashes green once every 60 seconds.
Exiting Alarm Mode: flashes green once per second for 5 seconds.
Exiting Silence Mode: flashes green 3 times.
When the LED indicator flashes YELLOW, it is important to check the working status of the alarm. There are three possible scenarios:
Low Battery Warning: flashes yellow with 1 beep every 60 seconds.
Smoke Malfunction Warning: flashes yellow 1 or 2 times with 2 beeps every 40 seconds.
CO Malfunction Warning: flashes yellow 3 or 4 times with 2 beeps every 40 seconds.
When the LED indicator flashes RED, an alarm will sound, indicating one of the following four modes:
Smoke Alarm Mode: flashes red with 3 long beeps every 1.5 seconds.
CO Alarm Mode: flashes red with 4 quick beeps (every 5.8 seconds for the first 4 minutes, and every 60 seconds after 4 minutes).
Test Mode: flashes red with 2 sets of 3 long beeps, followed by 2 sets of 4 quick beeps.
Silence Mode: flashes red once every 5 seconds (no beeps).
10-Year Battery Life
This 10-year battery-operated smoke alarm provides constant monitoring, even if there’s a power failure. Therefore, your home and family will be protected 24/7 so everyone can sleep safe and sound at night.
Item Model Number
3 V CR123A lithium battery (non-replaceable)
Smoke: photoelectric; CO: electrochemical
UL 217, UL 2034, ULC S531, CSA 6.19-01, EN 14604:2005, EN 50291
Kitemark and ETL listed
< 6 µA (avg.)
< 60 mA (avg.)
Best Operating Ambient Temperature
40-100 °F (4.4-37.8 °C)
Best Operating Relative Humidity
≤ 85% RH (non-condensing)
≥ 85 dB at 10 ft (3 m)
Smoke: ≤ 9 minutes; CO: ≤ 6 minutes
Screw fixings and mounting bracket supplied
Indoor use only
0.66 lbs (300 g)
5.7 x 5.7 x 2.0 inches (146 x 146 x 51 mm)
1 x Alarm Unit + 1 x Mounting Bracket + 3 x Screws + 3 x Anchor Plugs + 1 x User Manual