R Co. - Add-A-Zone Single-Wire Dual-Zone Control
R Co. - Add-A-Zone Single-Wire Dual-Zone Control is backordered and will ship as soon as it is back in stock.
Why so “cheap” at CheapSprinklers? Low prices by design — same parts, no compromise
Our prices are lower because of how we run our business — not because the product is different — and we pass those efficiencies directly on to you.
You’re receiving the same brand-new, factory-sealed item sold by big-box, supply-house, or bloated online-warehouse sellers — delivered direct to you, for less.
- Bulk Purchasing: We buy in high volume to lower per-unit cost
- Low Overhead: No physical storefronts or unnecessary middlemen
- Price-First Model: Our business is built around keeping everyday prices as low as possible — so you can put the savings toward other projects or your business.
- Fast & Efficient Fulfillment: Streamlined US warehouse operations keep costs down and orders moving fast.
The Result: Genuine products with full manufacturer warranty — delivered fast, without paying inflated big-box, supply-house, or bloated online-warehouse markups for the same parts.
CheapSprinklers Product Guarantee How we guarantee authenticity and warranty coverage
All products sold by CheapSprinklers are brand new and factory sealed. This R Co ADD-A-ZONE (Add-A-Zone) is sourced directly from R Co and ships from us in new-in-box retail packaging.
We’ve been sourcing and supporting irrigation products for professionals and DIYers through both brick-and-mortar and online channels since 1981.
If there’s ever an issue, CheapSprinklers stands behind what we sell and will help coordinate any warranty claim or replacement.
- Genuine New R Co ADD-A-ZONE: no knockoffs, no refurbished, no old stock
- Factory Sealed: shipped in original new-in-box retail packaging
- Current Production Inventory: no discontinued or clearance stock
- Complete R Co Warranty: full manufacturer coverage begins when your order is delivered
The Result: Peace of mind. You’re installing top-quality equipment — and if there’s ever an issue with this ADD-A-ZONE, you’re fully supported by CheapSprinklers and R Co.
Two valves on only one wire: Let Add-A-Zone solve your irrigation problems!
Work around broken zone wires. Add a new zone without adding new wiring. Add-A-Zone is the proven way to independently control two zone valves with only one pair of field wires.
Unlike other “switching” units, the Add-A-Zone behaves just like the valves are fully independent. A patented unit installed at the controller allows use of two separate zones, while sending the signal through only one field wire.
Features & Benefits
- Both valves connected to an Add-A-Zone are independently timed and activated from the controller for both manual and automatic operation
- The 2 valves can be assigned to separate watering schedules and programs in the controller
- Permits easy addition of an additional valve to controllers with spare stations without the need to divide out a run
time on a single zone or activate the new valve every other watering cycle - Makes adding a valve to correct water pressure problems easy
- Broken wires can be abandoned and worked around without loss of programming flexibility
- Fast and inexpensive to install
- The added valve can be a master valve
Installation Instructions
Adapter Part A (installs in controller cabinet)
- Connect Brown wire to one station output
- Connect Red wire to existing common wire
- Connect Black wire to the good field wire
Adapter Part B (bury in ground where convenient)
- Connect Black wire to existing zone wire
- Connect White wire to existing common wire
- Connect Red and White wire to the first control valve
- Connect Brown and White wire to the second control valve

Electrical Specifications
- Operates on most 24-Volt sprinkler systems
- Switching capacity: 0.5 A
- Life Expectancy: 50,000 operations
Why Choose Add-A-Zone
- Add-A-Zone behaves as if the valves are fully independent, unlike other switching devices which means there's no need for "watering every other cycle".
- Unit is installed at an open station on the controller and allows two valves to have separate watering schedules and programs while the signal is sent through one wire.
- Maximum control and flexibility that installs in minutes!
- Both solenoid valves connected through the Add-A-Zone can be independently timed and controlled for automatic and manual operations.
- Very simple and inexpensive to use.
- Eliminates the need to disrupt the landscape by digging in new wires.
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