W7220A1000 Honeywell W7220A1000 Jade 24V Econo Ctl w\Display Jade economizer with display. Greatly simplifies installation and troubleshooting. 24 volts. Works with any 2-10VDC actuator. Optional CO2 demand ventilation. Exhaust fan contact. Use C7250A1001, C7400S1000
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