Numens -Â Model SNC-300-SR-U -UL and EN appeoved 4 wire conventional smoke detector for house security
SNC-300-SR non-addressable photoelectric smoke detectors are state-of-the-art detectors suitable for connection to 4-wire non-addressable fire detection control and indicating equipment, or to addressable fire detection control and indicating equipment that can accept non-addressable type detectors. Advanced electronics in conjunction with a photoelectric smoke sensing chamber provide early detection of fire and high immunity against unwanted alarms. The SNC-300-SR non-addressable detector range provides fire detection and alarm system designers with a Standards-compliant economical smoke detector for life safety and property protection applications.· Advanced algorithms provide analogue detection discrimination
· Advanced algorithms provide analogue detection discrimination
· Surface-mount device (SMD) circuit board design
· High immunity against unwanted alarms
· Stable smoke sensing chamber. No adjustment or replacement required
· 4-wire model for DC 12 V and DC 24 V operation
· 4-wire models available with a N/O alarm relay output
· 4-wire model compatible with relay base
· Connects to zone monitor for use with addressable control and indicating equipment
· Sleek low-profile housing design
· Dual LEDs for 360° visibility
· Low maintenance
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SNC-300-SR |
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Operating voltage |
DC (10.8 ~ 26.4) V |
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Start-up current |
≤ 135 µA |
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Start-up time |
≤ 30 s |
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Quiescent current |
≤ 75 µA |
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Alarm current (max) |
35 mA |
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Sampling time |
(3 ~ 5) s |
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Alarm response threshold |
(0.08 ~ 0.15) dB/m |
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Alarm indicator |
Dual red LEDs |
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Reset voltage |
≤ 1 V |
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Reset time |
≤ 5 s |
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Alarm output relay |
SPST. N/O. 1.0 A @ DC 30 V / 0.5 A @ AC 125 V |
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Operating temperature |
(-10 ~ +55) °C |
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Operating humidity |
(0 ~ 95) % RH, non-condensing |
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Storage temperature |
(-25 ~ +80) °C |
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Storage humidity |
(0 ~ 98) % RH, non-condensing |
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Dimensions (excluding contacts) |
Φ 102 mm × 34 mm |
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Ingress protection rating |
IP-42 |
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EN 54-5 a |
CE |
UL 268 b |
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SNC-300-S2 |
√ | √ |
— |
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SNC-300-SL |
√ | √ |
— |
| SNC-300-SR | √ | √ |
— |
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SNC-300-SRR |
— |
√ |
— |
| SNC-300-SR4 |
— |
√ |
— |
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SNC-300-S2-U |
— |
— |
√ |
| SNC-300-SL-U |
— |
— |
√ |
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SNC-300-SR-U |
— |
— |
√ |
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SNC-300-SA |
— |
— |
√ |
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a EN 54-7 Fire detection and fire alarm systems. Smoke detectors. Point detectors using scattered light, transmitted light or ionization b UL 268 Smoke detectors for fire alarm signaling systems |
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