D-243 DC smoke alarms provide battery powered smoke detection and alarm functions within a single unit.
Advanced electronics in conjunction with a photoelectric smoke sensing chamber provide early detection of fire and high immunity against unwanted alarms.
D-243 DC smoke alarms are powered by a long-life lithium-ion battery and do not require a mains supply. Models with either user-replaceable and non-replaceable batteries are available.
Interconnectable D-243 DC smoke alarms use a wireless transmission path. Configuration into a closed group ensures that other units within radio signal range are not affected by a test or fire alarm occurring within the configured group.
The D-243 DC smoke alarm is suitable for general residential applications, and provides home owners and installers with an easy-to-install, long-life solution for life safety and property protection applications.
Power Supply | D-243-07 D-243-07TR | D-243-07Wi |
Power source | DC 3 V | |
Quiescent current | 2 μA | 5 μA |
Quiescent condition indication a |
Flashing red LED every 40 s
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Battery life expectancy | 10 years | 5 years |
Low battery indication | Short audible signal every 40 s, synchronized with a single flash of the red LED, for 30 days | |
Low battery hush indication b | Flashing red LED every 20 s | |
Low battery hush time | 10 h | |
Alarm Condition | ||
Alarm response threshold | (0.08 ~ 0.15) dB/m | |
Alarm condition audible indication output a | ≥ 85 dB @ 3 m (0.5 s on / 0.5 s off) | |
Alarm condition visual indication a |
Flashing red LED every 1 s
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Alarm condition current | 50 mA | 65 mA |
Alarm condition hush indicator | Device entering the Alarm condition: Flashing red LED every 1 s Interconnected devices configured as a closed group: Flashing red LED every 6 s | |
Alarm condition hush time | 9 min | |
Test Condition | ||
Test condition audible indication output c | ≥ 85 dB @ 3 m (0.5 s on / 0.5 s off) | |
Test condition visual indication | Device under test: Flashing red LED every 1 s Interconnected devices configured as a closed group: Flashing red LED every 40 s | |
Fault Condition | ||
Smoke chamber fault indication | Short audible signal every 40 s and a single flash of the red LED midway between the audible indications | |
Smoke chamber fault hush indication | Flashing red LED every 20 s | |
Smoke chamber fault hush time | 10 h | |
Wireless Interconnection | ||
Wireless radio interconnection operating frequencies | - |
433 MHz, 868 MHz, 915 MHz
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Number of interconnected devices | - |
No limit within signal range
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Maximum distance between interconnected devices d | - | 500 m |
Group mode configuration indication on master device | - |
Flashing red LED every 0.5 s followed by a short audible signal
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Group mode connection indication on slave device(s) | - |
Flashing red LED every 0.5 s followed by a short audible signal
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Group mode cancellation indication | - |
Double flash of red LED together with two short audible signals
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Group mode configuration timeout | - | 50 s |
Environmental | ||
Operating temperature | (0 ~ +55) °C | |
Operating humidity | (10 ~ 95) % RH, non-condensing | |
Storage temperature | (-25 ~ +80) °C | |
Storage humidity | (0 ~ 98) % RH, non-condensing | |
Miscellaneous | ||
Dimensions | Φ 100 mm ×36 mm |