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  • SNC-300-SR4
  • Smoke Detector, 4-wire, Relay Output, 48 V                                                                                         

    SNC-300-SR4 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-SR4 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.


    • Features
    • Specifications
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  • · 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 48 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


  • SNC-300-SR4

    Operating voltage

    DC (40 ~ 60) V

    Start-up current

    ≤ 135 µA

    Start-up time

    ≤ 30 s

    Quiescent current

    ≤ 75 µA

    Alarm current (max)

    35 mA

    Sampling time

    (3 ~ 5) s

    Alarm response threshold

    (0.08 ~ 0.15) dB/m

    Alarm indicator

    Dual red LEDs

    Reset voltage

    ≤ 1 V

    Reset time

    ≤ 5 s

    Alarm output relay

    SPST. N/O. 1.0 A @ DC 30 V / 0.5 A @ AC 125 V

    Operating temperature

    (-10 ~ +55) °C

    Operating humidity

    (0 ~ 95) % RH, non-condensing

    Storage temperature

    (-25 ~ +80) °C

    Storage humidity

    (0 ~ 98) % RH, non-condensing

    Dimensions (excluding contacts)

    Φ 102 mm × 34 mm

    Ingress protection rating

    IP-42



  • CE

    SNC-300-SR4

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  • 4-Wire

    Relay Output

    Base

    Package

    SNC-300-SR4

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    CN3043

    100Pcs/Carton