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co2 monitor with dual-channel ndir sensor
GZAIR MCH3-B CO2 Data Logger Monitor, Battery Included IAQ CO2 Detector, Dual-Channel NDIR Sensor, Tabletop Carbon Dioxide Meter with Data Export, Temperature and Humidity, 0~5000ppm Range Black
$160
$160 ×
SA103 CO detector
GZAIR SA103 CO Carbon Monoxide Detector with Visual, Audible, and Vibrating Alerts, Portable CO Monitor, IP67 Waterproof CO Gas Alarm for Home and Travel, Battery Operated
$129
$129 ×

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Subtotal $289
Total $289
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