You can make an existing sprinkler system wireless without trenching by leaving your controller and valves exactly where they are and replacing only the buried signal wire with a wireless link. The Thrive EVO wireless valve system carries each zone’s open and close command from your current controller out to the valve over the air, so you never have to dig, bore, or cut a new wire path to add, move, or repair a station.
That is the whole idea, and it matters because trenching is usually the most expensive and disruptive part of any irrigation change. The pipe and the valves might be fine. It is the wire, and the ground you have to open to reach it, that runs up the bill. This guide walks through exactly how the wireless retrofit works, step by step, and when it is the right call.
Why the wire is the real problem
On most in-ground systems, every valve is tied to the controller by a low voltage wire. When that wire has to cross something difficult, or when it fails somewhere you cannot see, your options have traditionally been bad ones: trench across a finished landscape, bore under a driveway or road, or dig up healthy turf hunting for a break.
None of that touches the actual watering hardware. The valve still works. The solenoid still works. The controller still works. You are tearing up ground purely to move an electrical signal from point A to point B. Wireless removes that whole problem by sending the signal through the air instead.
This is different from a smart or WiFi controller, which only changes how the schedule is set. Going wireless at the valve is about the connection between the controller and the valve, not the schedule. If you want the background on the controller side, our guide to a wireless irrigation controller covers that layer.
What you need to go wireless
The Thrive EVO is a wireless valve system, not a controller and not a timer. It works with the controller you already own. A basic retrofit uses two pieces per link:
- A transmitter that connects to the station outputs on your existing multi wire controller. It listens for the zone signal the controller already produces.
- A receiver placed out at the valve, wired to the valve’s solenoid. When the controller calls the zone, the transmitter relays it to the receiver, and the receiver opens the valve.
Because the EVO works with any standard multi wire controller and standard valves, and is compatible with two wire systems and pump start relays, you almost never have to change the parts you already have. Each Thrive device manages up to 4 stations, and the link holds a reliable range of about 700 yards line of sight or roughly 200 yards through walls and other obstacles.
Step by step: the wireless retrofit
Here is the process at a high level. A distributor or installer can confirm the specifics for your site, but this is the shape of the job.
Step 1: Identify the stranded or failed zone. Find the valve or valves you cannot reach with wire, or the zone whose wire has failed. This is the valve you want to bring back onto your controller without digging.
Step 2: Connect the transmitter at the controller. Wire the EVO transmitter to the station output for that zone on your existing controller. The controller keeps doing what it always did. It just now hands the signal to the transmitter instead of to a buried wire.
Step 3: Place the receiver at the valve. Mount the receiver near the valve box and wire it to the solenoid on the existing valve. This is a short local connection at the valve itself, not a long run back to the controller.
Step 4: Confirm range and test the zone. Make sure the receiver is within reliable range of the transmitter, then run the zone from your controller and watch it open. Because the command is wireless, the valve responds without a single foot of new trench.
Step 5: Repeat for other stranded valves. Add links for any other zones that are hard to reach. You are extending your existing controller wirelessly rather than building a second system beside it.
The result is a system that looks and runs exactly like it did before, except the hard to wire valves now answer over the air.
Where the no-trench retrofit pays off most
Wireless is not the answer to every job, but on the following it is often the cheapest and least destructive option by a wide margin:
- Valves stranded by new construction. A parking lot, a road, a sidewalk, or a new building went in and cut a zone off from the controller. Boring across it is costly or simply not permitted.
- Wire failures under finished ground. A break somewhere under the turf or hardscape killed a zone, and locating it would mean opening up a lot of healthy landscape.
- Additions to a completed property. The landscape is installed and the concrete is poured. You want another station without tearing any of it up. That specific case is worth its own read: see how to add a sprinkler zone without digging up your yard.
- Reconnecting orphaned valves instead of adding a second clock. Rather than installing a whole separate controller for a far corner of a site, you bring those valves back onto the controller you already run.
In every one of these, the valve is fine and the trenching is the cost. Removing the trench removes the cost.
How reliable is a wireless valve link
It is a fair question to ask before you trust a zone to radio instead of copper: how dependable is the link. The EVO is built for the outdoor irrigation environment and holds a reliable range of about 700 yards line of sight, or roughly 200 yards through walls and other obstacles. In practice that means the receiver at the valve needs to sit within that window of the transmitter at the controller, which covers the large majority of residential lots and a wide share of commercial sites.
On bigger properties, where a valve might sit beyond a single hop, you plan the layout so each receiver stays inside reliable range rather than pushing one link to its limit. The valve still opens and closes on your controller’s schedule. The only thing that changed is that the command arrived over the air instead of through a wire that could be cut, corroded, or buried under new construction.
Wireless valves and wireless control are two different upgrades
It helps to keep two ideas separate. Making your valves wireless, which the EVO does, is about the connection to the valve. Making your scheduling wireless and app based is a separate upgrade on the controller side.
If you want both, the Thrive AirLink Cloud Controller runs your stations from the Thrive mobile app over the Amazon Sidewalk network, which reaches about 95 percent of the populated United States, with a low cost gateway where coverage is thin. One Cloud Controller manages 50+ stations. You can see how that compares to WiFi controllers on our wireless irrigation controller with no WiFi page. For a straightforward no-trench retrofit of existing valves, though, the EVO on its own is the tool.
Frequently asked questions
Can you really add or fix a sprinkler zone without trenching? Yes. A wireless valve system like the Thrive EVO carries the zone signal from your existing controller to the valve over the air, so you do not have to trench or bore a new wire path. You keep the controller and valves you already have and only replace the buried wire with a wireless link.
Do I have to replace my controller to go wireless? No. The EVO works with any standard multi wire irrigation controller you already own. It connects to your controller’s station outputs and relays the signal wirelessly, so there is no rip and replace.
How far can the wireless signal reach? The link holds a reliable range of about 700 yards line of sight, or roughly 200 yards through obstacles such as walls and buildings. Each Thrive device manages up to 4 stations, so one receiver can bring a small cluster of valves back online.
Will it work with my existing valves and solenoids? Yes. The EVO drives standard irrigation valves and solenoids and is compatible with two wire systems and pump start relays. You are not changing the valve, only how the open and close command reaches it.
Is this the same as a WiFi sprinkler controller? No. A WiFi or smart controller changes how the schedule is set. The EVO changes how the signal reaches the valve. They solve different problems, and you can use the EVO on its own or alongside a wireless controller like the Thrive AirLink.
Skip the trench, keep the system
Making an existing sprinkler system wireless is not a teardown. It is a swap of the one part that causes the most trouble, the buried wire, for a reliable radio link, while your controller, valves, and solenoids stay exactly where they are. That is why the no-trench retrofit fits finished landscapes, failed zones, and valves stranded across new construction. When you are ready to source the parts, find Thrive through irrigation distributors on our where to buy page.
Skip the trench. The Thrive EVO reconnects your valves wirelessly.
See the Thrive EVO