OpenSprinkler · OpenSprinkler v3.4 AC
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The retained reference is $169 current U.S. configured reference. The direct configurator varies from $140 to $183; $169 is the retained exact configured reference corroborated in a June 2026 independent installation review. Verify the wire map, valve and transformer load, signal path, local watering rules, backflow status and return or installer-service terms before purchase.
Current market
Each line carries its own check date because price, software, specifications, and product cycle do not age at the same speed.
The direct configurator varies from $140 to $183; $169 is the retained exact configured reference corroborated in a June 2026 independent installation review. Confirm current stock, authorized seller, tax, delivery, included accessories, return terms and installer labor before paying.
OpenSprinkler v3.4 AC is the defended fit for a technical owner who values local APIs, no-account operation and major expansion over turnkey support.
Other paths
These are not generic competitors. Each one represents a different way to buy into the same market.
Netro
Hunter Industries
What changed
Older observations stay in the ledger when the current view changes. That lets a buyer tell the difference between an old complaint, an active issue, and a problem that was corrected.
OpenSprinkler v3.4 AC was checked against exact manufacturer identity and support, current U.S. price, zone and wiring limits, weather, sensor, offline, privacy and service boundaries, independent analysis and bounded owner or installer reports.
Each amount stays tied to its source and capture date. Conflicting prices remain visible until the seller resolves them.
Current reference priceA structured timeline will begin with the next source capture
Owner experience
Owner and installer discussion returns to local api, home assistant integration, expansion, technical setup, firmware and security maintenance rather than a universal water or reliability result.
These are self-reported experiences from different properties, climates, soils, slopes, precipitation rates, pressure and flow conditions, valve loads, wiring ages, networks, apps, weather stations, subscription tiers, local rules and maintenance histories. They identify checks to run and do not prove water savings, plant health, leak detection, freeze protection, reliability, safety or code compliance.Verified-product owners discuss local control, integrations, expansion, setup, firmware and support. Manufacturer-hosted reports are self-selected.
Use local-only operation unless remote access is necessary, rotate every affected credential and token, and document expansion and relay wiring.
1 evidence recordSources
The page separates what a source states directly from what we conclude across sources.
OpenSprinkler identifies OpenSprinkler v3.4 AC as an eight-zone open-source controller expandable to 72, with local web control, optional Ethernet and optional remote cloud access.
$169 current U.S. configured reference was retained for OpenSprinkler v3.4 AC. The direct configurator varies from $140 to $183; $169 is the retained exact configured reference corroborated in a June 2026 independent installation review
The base supplies eight stations; each expansion board adds 16 up to a documented maximum of 72, subject to power, cabinet and firmware limits Local firmware supports programs, weather adjustment, masters and per-zone behavior; open flexibility does not automatically encode municipal schedules or validate precipitation rates The AC version uses a compatible 24 VAC supply for valves and software-defined master outputs for pump relays; DC and latch versions are electrically different and pumps need isolated high-voltage work Two sensor ports support configured rain, soil, program and limited flow functions, with flow assigned to the documented port; alerts depend on calibration and do not detect every leak Weather adjustment can use network data and configured location, but it inherits provider, network and site-input limits and cannot provide physical freeze protection
Local browser and API use can avoid an account; optional OpenThings Cloud, Cloud Sync, remote access and third-party integrations add credentials, exposure and privacy boundaries Schedules, web UI and API can remain entirely local without a subscription; optional remote cloud services require internet and continuing vendor operation Open firmware and local access reduce cloud lock-in but increase owner responsibility for updates, backups and security; OpenSprinkler disclosed a July 2026 website, OTC and Cloud Sync breach requiring credential and token resets
WaterSense labels independently certified weather-based controllers against performance criteria. Weather adjustment remains dependent on correct installation, landscape inputs, representative data and local watering requirements.
EPA states that its water budget is not intended to schedule irrigation and that real-time local weather data are needed for scheduling decisions.
Professional guidance distinguishes on-site sensors, local weather stations and internet weather as different data paths whose selection and configuration affect schedule adjustment.
Cross-connection control and backflow prevention are distribution-system protections governed through local programs; an irrigation controller does not supply them.
A June 2026 exact installation review documents v3.4 AC configuration price, local Home Assistant use, wiring, weather, expansion and ownership tradeoffs.
Verified-product owners discuss local control, integrations, expansion, setup, firmware and support. Manufacturer-hosted reports are self-selected.
Spark 16-Zone Smart Sprinkler Controller is the high-channel consumer smart control alternative at $199 current U.S. direct price.
HPC 4-Station Hydrawise Controller is the expandable hydrawise touchscreen control alternative at $214.95 current U.S. retail price.
Manufacturer identity, exact specifications or manual support, current U.S. price, independent editorial or professional evidence and bounded owner or installer evidence were checked on August 18, 2026. This desk covers complete, current U.S.-supported residential and light-property irrigation controllers where conventional programming, weather-aware cloud control, retrofit connectivity, modular expansion, two-wire topology or proprietary whole-yard design materially changes the purchase. It excludes faucet and hose-end timers, single-valve gadgets, standalone sensors, valves and solenoids, agricultural or municipal central control, unsupported systems, cosmetic bundles, marketplace-only products and station-count variants without a capability difference. Station count, expansion modules, transformer capacity, valve inrush, common wiring, master-valve and pump-start relays, flow-meter compatibility and sensor ports are exact-model limits. Water budgets and ET or forecast adjustments depend on landscape data, soil, slope, roots, precipitation rate, distribution uniformity and representative weather data. Utility and municipal watering days, drought rules and time windows must be checked and programmed locally because app rule databases can be incomplete. Freeze skips protect schedules, not pipes, valves or backflow assemblies; winterization is separate. Flow or leak alerts do not prove leak absence or stop every failure. The controller supplies no backflow protection and does not establish plumbing, electrical, permit, inspection or code compliance. Pumps, 120 or 240 V circuits and conduit work require the documented relay path and qualified installer or electrician. The controller cannot repair pressure, flow, coverage, valve, pipe, soil or root problems. App, account, cloud, weather provider, privacy, firmware, subscription and support availability can change. No controller guarantees water savings, plant health, freeze protection, leak prevention or code compliance.
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