Honeywell SIO6042 Sylk IO Expansion Module – Brand New

This is a Honeywell SIO6042 Sylk IO Expansion Module.

Brand new, still sealed in the package.

If you're expanding a Honeywell system that uses Sylk IO, this is the part you need.

Not much else to it—it's a straightforward module for communication and expansion.

No UPC on this one, but it's genuine Honeywell gear.

Just make sure your system is compatible before ordering.