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Three measurements
These fans come with an 8 ft 120 V power cord
Grow Chunks are a larger version (3/4" square) of the popular Grow Cubes
ORMI Listed for organic use
TrolMaster Carbon X Controller PTB1130VEP3 Three measurementsThe TrolMaster Carbon X system provides critical monitoring of CO2 levels for up to 13 separate zones rooms. The system can have both high level (up to 30,000ppm) alerts, as well as low level (5,000ppm) alerts. Both high and low level limits are user adjustable to meet local regulations for supplemental CO2 use indoors. The Carbon X system can also control various devices such as ventilation fans, dampers, main CO2 valves as well as to send a signal
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