- 2-Zone AR861-2II or 3-Zone AR861-3II
- Ice Cube Technology
- Plug-in Replacement Relays
- Switchable Priority
- Perfect for Indirect Water Heaters or Priority Zones
- Auto-Reset Electronic Fuse Protection – Eliminates Nuisance Service Calls
- 15VA Transformer/Full 1/3HP Realy Load Rating
- Robust Components Provide Years of Trouble-free Service
(See Installation, Operation and Maintenance Manual for complete instructions)