OpenSprinkler (AC, fully-assembled)

OpenSprinkler (AC, fully-assembled)
OpenSprinkler (AC, fully-assembled) OpenSprinkler (AC, fully-assembled)
Product Code: os_30
Availability: In Stock
Price: $150.00

Available Options

OpenSprinkler Options:

* Power Supply Option:

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NOTE: you will receive AC-powered OpenSprinkler 3.0, with built-in WiFi and OLED display. Information on this webpage will be updated over the next couple of weeks. In the meantime, please take a look at this Getting Started Guide for details. OpenSprinkler 3.0 only provides WiFi connection and has no Ethernet port anymore (if you need wired Ethernet connection, you can use a router, including inexpensive pocket-size router)..

OpenSprinkler is an open-source, web-based sprinkler / irrigation controller for lawn and plant watering, drip irrigation, hydroponics etc.


  • Intuitive User Interface: no more messing with buttons and knobs, no more running to your garage to make a single change to your sprinkler programs. Instead, use web browser and our free mobile apps to access OpenSprinkler from anywhere, whether you are at home, office, or traveling away.
  • Smart Control: our weather algorithm automatically adjust your sprinkler run times using real-time weather data. It not only stops watering when it rains, but also adjusts the water time on a continuous scale based on your local weather conditions.
  • Expandable: 8 zones on the main controller; expandable to 48 zones with OpenSprinkler expansion boards. Have more than 48 zones? Our app can manage multiple OpenSprinkler systems for limitless expansion.
  • Compatibility: OpenSprinkler is a drop-in replacement of conventional sprinkler controllers. It supports master zone / pump start relay, rain sensor, and it has buttons and LCD for manual control on the controller.
  • Open-Source: OpenSprinkler is built on open-source software and hardware. Its design files are publicly available on Github. Our mission is to educate and to leverage community wisdom to help make the best sprinkler controller. If you have technical skills, you can extend its capability any way you need.

OpenSprinkler International Distributors:

Valve Compatibility

Installation Tutorial

Firmware 2.1.0 Tutorial

Use OpenSprinkler to Control Power Sockets

Download and Instructions

  • Frequently Asked Questions (FAQs)
  • Check out the OpenSprinkler Support page for tutorial videos, user manual, and API documentation.
  • This is microcontroller-based OpenSprinkler. For RPi-based OpenSprinkler, please check out OpenSprinkler Pi. For BeagleBone-based OpenSprinkler, please check out OpenSprinkler Beagle


  • Power supply: 22∼28V AC.
  • Built-in WiFi and 128x64 OLED display.
  • Number of zones: 8 on the main controller (firmware supports up to 48).
  • Package includes one OpenSprinkler controller (transformer not included). Selectable add-ons:
    • 24V AC sprinkler transformer (we only provide US plug type, 110~120V input voltage).
    • Zone expansion boards
    • WiFi router (if you have only wired Ethernet connection and no WiFi)
  • Check other related products in the Related Products tab above.



Technical Details
Operating Voltage 22 to 28V AC
Built-in Components ATmega1284 mcu, Ethernet controller, LCD, USB port (for firmware upgrade), microSD slot, RTC with battery, rain sensor terminal, fuse, mini-relay, per-station TVS.
Power Consumption 1 to 1.5 Watt
Maximum # of Zones 48
Max. Current Per Zone 800mA continuous (@24V AC), 8A impulse / inrush
Package Inclues One assembled and tested OpenSprinkler, with product case and terminal blocks. Selectable add-ons: 24V AC sprinkler transformer, pocket-size WiFi adapter, zone expansion boards.
Dimension and Weight
Size 135mm x 100mm x 32mm (5.3" x 4" x 1.26")
Weight 200g (7oz)

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