4-Wire Fire Loop

System Sensor 4W-B i3 4-Wire Photoelectric Smoke Detector
$87.60

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System Sensor 4WTA-B i3 4-Wire Smoke and Heat Detector with Sounder
$110.15

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System Sensor COSMO-4W i4 4-Wire Smoke and CO Detector
$199.79

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System Sensor COSMOD4W 4-Wire Smoke/CO Interface Module
$110.69

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