Add-A-Zone RCO860009 Single-Wire Dual-Zone Module

Add-A-Zone RCO860009 converts a single field wire into two independently controlled irrigation valves without digging or new wiring. Designed for quick installation, it restores full controller functionality so each valve runs on its own schedule — not every other cycle. Ideal for repairing broken field wires, adding an extra valve to correct pressure issues, or expanding a system without trenching.

• Independent valve control — lets two valves operate on separate zones and schedules from one station.
• No new wiring required — add a zone or work around broken wires without disturbing landscaping.
• Simple installation — adapter components mount at the controller and valve box for fast hookup.
• Reliable switching — suitable for most 24V sprinkler systems with a 0.5A switching capacity.
• Long service life — rated for approximately 50,000 operations for durable field use.
• Flexible use cases — add a master valve, correct pressure problems, or expand zones when controller stations are limited.

The unit uses a patented controller-mounted adapter and an in-field adapter in the valve box to route station output through one active wire and separate blue/brown valve leads at the irrigation valves. Typical installs connect the orange active wire to the field wire, white wires to commons, and blue/brown to individual valves; LED indicators show active station status. See included documentation for wiring diagrams and safety precautions. Model: RCO860009. Switching capacity: 0.5A. Voltage: 24V nominal. Life expectancy: ~50,000 cycles.