05/13/2026
đź”§ Introducing the upgraded iO-TWIN: smarter, simpler, and A2L-ready.
We’ve been listening, and we’re excited to share a major upgrade to the iO-TWIN lineup.
A2L refrigerant compatibility is now built directly into the iO-TWIN — no add-ons required.
That means you can say goodbye to the additional RY-1-HB relays previously needed for A2L system compatibility. Fewer components. Fewer connections. Less installation time.
Whether you're working on new construction or retrofit projects, the iO-TWIN delivers a cleaner, more streamlined solution that’s ready for today’s refrigerant landscape right out of the box.
Key benefits:
âś… Built-in A2L compatibility
âś… Eliminates the need for separate RY-1-HB relays
âś… Simplified installation with fewer components
Ready to upgrade your controls game? Reach out to your iO HVAC Controls representative or visit www.iohvaccontrols.com to learn more.