co2 controllers for sale, brand-new and used.

HONEYWELL The C7632 Sensor and Controller is a stand-alone carbon dioxide (CO2) sensor for use in determining ventilation necessity with heating ventilation and air conditioning (HVAC) controllers. The C7632 measures the CO2 concentration in the ventilated space or duct. The C7632 is used in HVAC systems to control the amount of fresh outdoor air supplied to maintain acceptable levels of CO2 in the space.

New in the box. The box is a bit beat up but unit is ok. Photos are of e actual item Here is the marketing info Series 2200 Temperature Room Units for TEC and ATEC - Display, Setpoint and Sensing Technical Specification Sheet Document No.

HIGH EFFICIENCY CARRIER 5 TON GAS/ELECTRIC COMMERCIAL PACKAGED UNIT

Fisher Digital CO2 Benchtop Laboratory Incubator * 910 * 115 V * 9 ft3 *Tested Fisher Digital CO2 Benchtop Laboratory Incubator * 910 * 115 V *

GENERAL The AQS51-KAM and AQS 61-KAM sensors/controllers for duct mounting measure the carbon dioxide (CO2) concentration and the temperature in the return or outside air. They are used in ventilation and air conditioning systems to control the amount of fresh outside air being supplied to the occupants for acceptable indoor air quality and to reduce unnecessary conditioning of outside air during lowoccupancy periods.