Aprilaire heat pump 4 zones control

Aprilaire Exclusive Zone Panel Features:
+ Compatible with wireless outdoor temperature sensor (Models 6403 & 6404 only)
+ Controls high and low balance point from one outdoor temperature senor
+ Time delay override to simplify check out and troubleshooting 
+ Resettable fuses for each zone’s dampers
+ Multiple mounting and wire run options
+ Short cycle protection
+ Built in fan purge
+ 5-year warranty