ARM-2P/3P/4P/6P Switching Relays With Priority

·Electronic Fuse - Auto reset

·Robust Transformer - Enough to handle up to 15 zones

·Double-sided printed circuit board construction

- 100% factory tested For reliability

·Clearly marked terminals with clamping plates

·Separate xx (isolated switch) & ZC/ZR Relays protect boiler aquastat

·Priority Safety Timer

- Ensures other zones get heat every 30 minutes & prevents freeze-ups

·5-second Time Delay for boiler shut-off

·Relay Diagnostic Light

- Easily seen through window on cover

·Premium plug-in replaceable relays

·24 VAC Transformer Terminals

·Plug-in, Add-on Zone Modules (AD-1 or AD-4)

·Switchable Priority

·High relay load rating - 1/3HP