Honeywell AQ25744B Aquatrol Zoning Control. The Honeywell AQ257 expansion zoning panels work with AQ2000 boiler control panels and AQ1000 communication thermostats to control up to four space heating zones. Combine with extra expansion panels and AQ2000 panel for 16 space heating zones.
| Product: | Controller |
| Manufacturer: | Honeywell |
| Mpn # | AQ25744B |
| Weight | 1.50 lbs. |
