Plant Sentry™ · closed-loop irrigation
Your sprinklers
water the clock.Not the plants.
Every controller on the market — even the ones called smart — is still a timer. It has never once asked the soil whether it needs water.
Plant Sentry puts sensors in the ground and lets the plants answer.
ZONE 01
Front lawn
Optimal — holding
ZONE 02
Roses
Watering now · 4 min
ZONE 03
Azaleas
Dry — queued next
ZONE 04
Shrubs
Skipped — rain
A timer would have watered all four zones for the same twelve minutes this morning. Three of them didn't need it. That difference is where 30–40% of outdoor water goes.
The problem
Watering blind is expensive
Sprinklers run on a schedule someone set months ago, in weather that no longer exists, for plants that have since grown. The result is water you paid for, running down the driveway — and plants that die anyway.
What a timer knows
The time of day. That's the whole list.
- Whether it rained — if you pay for the upgrade
- A weather forecast, for the region, not your yard
- A schedule you typed in once and stopped thinking about
What Plant Sentry knows
Whether the plants are actually thirsty.
- Live soil moisture in every single zone
- What's planted there, and what that species needs
- Real flow at the manifold — leaks, stuck valves, gallons used
- Your water rate tiers, and where this month's bill is heading
How it works
Close the loop
Open-loop means guessing. Closed-loop means measuring, acting, then measuring what happened. It's how a thermostat works. It has never been how a sprinkler works.
Read the soil
A wireless moisture sensor sits in every zone. An ultrasonic flow meter clamps onto the manifold and counts every gallon.
Weigh it up
Cloud AI blends soil moisture with plant type, weather, season, and your utility's rate tiers to decide what each zone actually needs.
Water precisely
Valves open per zone, deliver exactly that much — and close when the plants are satisfied, not when the clock runs out.
Watch the system
Leak detection, stuck-valve auto-cycling, and daily self-diagnostics. Set it once and leave it alone.
↺ and then it measures again — every zone, every cycle
The system
Four pieces. Thirty minutes. No trenching.
Purpose-built wireless hardware, sealed to IP67, running a year on a battery, talking over LoRa at up to a kilometre. It calibrates itself. You will not need an installer.
Smart controller
Runs up to 12 zones, 12 sensors and a flow meter. Mounts on the wall where your old controller was, or straight into the valve box.
WIFI + BT · 35 dBm LoRa · IP67
Moisture sensor
One per zone. Capacitive sensing on a stainless spike — push it into the ground, colour-code it to the zone, forget it.
304SS SPIKE · 1 YR BATTERY · IP67
Ultrasonic flow meter
Snaps onto the inlet pipe without cutting it. Sees every gallon per zone, so leaks show up the day they start — not on the bill.
CLAMP-ON · PER-ZONE ANALYTICS · IP67
LoRa dongle
Plugs into any home router. Bridges the fully wireless system straight to the cloud — no controller on the garage wall at all.
RJ45 / PoE · 1 KM RANGE
Wired retrofit
- Swap your existing controller in about 15 minutes — the valve wires you already have stay exactly where they are
- Adds a wireless flow meter and a moisture sensor per zone
- WiFi to your router, LoRa out to the sensors
- Snap a photo of each bed and the AI works out what's planted there
The upgrade for a system that already works
Fully wireless
- No trenching, no wiring — a latching solenoid swaps into your existing valve in 30 seconds
- Battery valve controller lives in the sprinkler box for a year and more
- The LoRa dongle in your router replaces the wall controller entirely
- Built for new installs — and for the day a wire finally breaks
Same AI, same app, no wires anywhere
Both fit standard Orbit, Rain Bird and Hunter valves · typical 4-zone install takes about 30 minutes · works with the sprinklers you already own
The app
Your landscape, running itself
Everything at a glance
Live moisture per zone, what's watering right now, flow rate, leak status — and the water and dollars you've saved this month.
Advice you can act on
Trim an over-watered zone. Mulch a dry one. Swap out a plant that was never going to survive here. The AI recommends it, and can do it for you.
Tell it what you'll spend
Set a monthly water budget and Plant Sentry trims usage to hit it — gracefully, starting with the zones that can afford it, without stressing the plants.
Snap a photo, get an answer
Point your phone at a sick plant. Pests, disease, and what to do about it — instantly.
It fixes itself first
Stuck valves get auto-cycled overnight. Daily diagnostics catch failures before you notice them, and can text your landscaper the details.
Beta program
Put a sensor in your soil
Wireless Water is in beta ahead of launch. We're placing early systems with homeowners, landscapers and commercial sites in high-rate water markets. Tell us about your yard and we'll be in touch.
Prefer email? Write to rich@odi.net. We'll only use your details to talk to you about the beta — no lists, no sharing.