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WR2 Series

Wireless Rain & Rain/Freeze Sensors

Wireless Rain Sensor
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Rain and rain/freeze sensors are becoming “must have” components for irrigation systems these days. Rain Bird designed the new WR2 wireless sensor to exceed the standard. With revolutionary features, this sensor saves time, improves system performance and enhances your reputation as a water management expert.

Reliable signal transmission and other innovations deliver superior responsiveness to rainfall and cold temperatures, while user-friendly features cut installation and programming time in half. Choose your own rainfall set points and save up to 35% on water usage while promoting lush, beautiful landscapes.


Installs faster with one-person

Rain Bird designed the WR2 so that one person can install it quickly and easily. Signal strength is displayed on both the sensor unit and the controller interface. The sensor’s innovative versatile mounting bracket quickly attaches securely to a gutter or any vertical surface, such as a fence or wall.

Easier to use and program

Programming the WR2 is simplified for fast set-up. In just a few seconds, you can select set points, program the irrigation modes and save your default. On the controller interface, all settings are displayed on the easy-to-read LCD screen, so you can see signal strength, rain and temperature set points, battery life and more at a glance. Unlike other rain sensors, the WR2 has a long-lasting battery that’s quick and easy to replace.

Superior signal reliability

Signal strength is displayed on the controller interface using familiar cell phone icons. Dual antennas safeguard the system from signal interference by radios, mobile phones, power lines, etc. The WR2 system overcomes most line-of-sight obstructions so you have freedom in locating the sensor. Weather data is updated every 45 seconds to ensure the most reliable communication between sensor and controller.

Models

North America (916 MHz)

  • WR2-RC: Rain Combo
  • WR2-RFC: Rain/Freeze Combo
  • WR2-RFI: Rain/Freeze Controller Interface Only

International (868 MHz)

  • WR2-RFC-868: Rain/Freeze Combo


WR2-RC
Rain Sensor & Controller Interface

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WR2-RFC 
Rain/Freeze Sensor & Interface

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Dimensions

WR2 Controller Interface
• Width: 3.1“ (7.9 cm)
• Length: 6.8” (17.2 cm)
• Depth: 1.7” (4.3 cm)
• Distance between Mounting Holes: 6.25" (15.9 cm)


WR2 Sensor Assembly
• Sensor Length: 5.8” (14.7 cm)
• Attachment Bracket Length: 4.6” (11.7 cm)
• Distance between Mounting Holes: 4.25" (10.8 cm)
• Horizontal displacement (bracket + fixed ball arm): 5.5” (14.0 cm)

Electrical Specifications

  • Application: suitable for use with 24 VAC controllers (with or without pump start / master valve).
  • Electrical rating suitable for use with up to six 24VAC 7VA solenoids plus an additional master valve or pump start that does not exceed 53VA.
  • Controller Interface Wire: 30” (76 cm) length of #22 gauge (0.64 mm) UV resistant extension wire.
  • UL, cUL, CE, C-Tick, and WEEE certifications.
  • FCC approved spread spectrum 2 way radio transceivers with FCC Class B approvals.
  • Signal transmission distance of 700’ Line of Sight.
  • Battery life: four or more years under normal operating conditions.
  • 6 KV surge / lighting protection.

Mechanical Properties

  • Adjustable rainfall settings from 1/8” – 1/2” (3 – 13 mm).
  • Adjustable low temperature settings from 33°F – 41°F (0.5° – 5°C).
  • Three irrigation modes to select: Programmed, Suspend Irrigation for 72 hours, Override sensor for 72 hours.
  • "Quick Shut Off” suspends active irrigation cycle within approximately two minutes.
  • High-grade, UV resistant polymer units resist harmful environmental effects.

Three-year trade warranty.

Frequently Asked Questions

What are some of the recent product enhancements to the WR2?

Do you have any tips for troubleshooting the WR2 in the field?

If there is a power outage of up to several hours that shuts off the standard controller and WR2 rain sensor, does the end user need to reprogram the WR2 or does the programming remain in memory?

The rain fall set point and low temperature set points are maintained after a power outage.  There is no need to reprogram these two settings.  The irrigation mode will always default back to “programmed irrigation” to ensure protection of the turf regardless of what irrigation mode may have been programmed (i.e. Suspend for 72 hours, Override for 72 hours, or Programmed Irrigation) prior to the power outage.

Are there any unique wiring configurations to consider when installing the WR2 with a controller? 

The WR2 is compatible with all Rain Bird and competitor controllers.  For those controllers that do not have an onboard power source, a separate 24VAC transformer will be required to operate the WR2 Controller Interface. For these irrigation controllers, purchase the Rain Bird part number 63747301S. Proper wiring instructions are found in Section 2 of the WR2 user manual (PDF: 6.7 MB). A unique wiring diagram for the ESP-MC and ESP-LXM (PDF: 229 KB) is also available.

My WR2 rain sensor is not inhibiting irrigation.  What might be a cause for this?

If your standard controller has a sensor switch, ensure the sensor switch is in the “active” position.  If the switch is left in the “bypass” position after WR2 installation, the WR2 rain sensor will not inhibit the irrigation schedule.

What training tools are available for my education on the WR2?

All training tools for the proper installation and programming of the WR2 are available on the website. Training tools include user manuals and interactive programming videos.

Can the WR2 be installed and operated in conjunction with other accessory products such as a soil moisture sensor?

YES.  In fact, third party research indicates significant additional water savings can be achieved when combining a soil moisture sensor with a rain sensor.  Refer to proper installation instructions when wiring both accessories to a standard controller.

What is the life expectancy of the battery in the sensor? 

4 years under normal operating conditions.

How do I know when I should replace the sensor battery?

We recommend changing the battery in the sensor when only one vertical bar is illuminated in the “Battery Life Remaining” icon found on the WR2 Controller Interface LCD.

How do I replace the sensor battery?

  • Remove battery cassette from bottom of sensor.
  • Remove battery from cassette
  • Insert new battery using label on battery cassette to properly orient the battery.
  • Insert the battery cassette back into the sensor.  Align arrow on battery cassette with unlocked position indication on sensor and turn clockwise to locked position indication.
  • Sensor LED blinks once to indicate the sensor is powered up.
  • The WR2 Sensor automatically reacquires the WR2 Controller Interface.  Check the WR2 Controller Interface LCD for signal strength indication prior to leaving the jobsite.

How many, and what type of battery is found in the WR2 Sensor?

There is one (1) Lithium CR2032 battery in the sensor.  To order this spare part from Rain Bird, please request part number #651009S from an authorized distributor.

After I wire the WR2 rain sensor to the controller and apply power, the LCD on the WR2 Controller Interface remains blank.  What is the problem?

The WR2 Controller Interface is not receiving power.  Confirm the correct wiring of the WR2 Controller Interface to the Irrigation Controller.  Refer to the user manual for proper wiring. WR2 user manual (PDF: 6.7 MB).

During installation, the “Sensor Indicator / Pairing Status” icon continues to flash.  What does that mean?

The WR2 sensor has not paired and is not communicating with the WR2 Controller Interface.  Refer to the user manual for instructions on how to pair the sensor to the controller interface. WR2 user manual (PDF: 6.7 MB). An additional step might be to check proper orientation of the sensor battery or to replace the battery.  

I have installed the WR2 system and came back to check its performance a month or two later.  When I look at the WR2 Controller Interface LCD screen, I notice the “Sensor Indicator / Pairing Status” icon does not communicate a battery life or signal strength.  What does that mean?

A WR2 Sensor that does not communicate battery life or signal strength to the WR2 Controller Interface is no longer paired.  First check the sensor battery to ensure it is making contact with the battery contacts.  Remove the battery cassette from the sensor and adjust the battery contact positions using a paper clip.  Upon replacing the battery cassette, if the sensor fails to automatically reacquire the WR2 Controller, replace the battery with a fresh battery.  If this does not correct the situation, the sensor may have been damaged or vandalized.  Replace the sensor with the appropriate model number WR2-RS (Rain Sensor only) or the WR2-RFS (Rain / Freeze Sensor only).  Both sensors can be purchased separately.

Can you splice into the WR2 Controller interface cable harness and extend the wire run to accommodate out door installations without affecting the performance of the WR2?

You can splice into this 30 inch cable to extend its length without impacting performance.  Total wire runs of 50 feet or less will not affect the device.

If the battery on the WR2 sensor goes dead after 4 years of service and is not replaced in a timely way, will the irrigation system continue to irrigate or does the system shut off until the battery is replaced?

If the battery goes dead and is not replaced in a timely fashion, the time based irrigation controller resumes its normal programmed schedule and continues to irrigate in accordance with that schedule.

If there is a power outage of up to several hours that shuts off the standard controller and WR2 rain sensor, does the end user need to reprogram the WR2 or does the programming remain in memory?

The rain fall set point and low temperature set points are maintained after a power outage.  There is no need to reprogram these two settings.  The irrigation mode will always default back to “programmed irrigation” to ensure protection of the turf regardless of what irrigation mode may have been programmed (i.e. Suspend for 72 hours, Override for 72 hours, or Programmed Irrigation) prior to the power outage. Additionally, the sensor will automatically reacquire the WR2 Controller Interface and “pair” once power is restored.

What is the function of the “Quick Shut Off” feature?

If the irrigation cycle is running and the WR2 sensor detects rainfall during the irrigation schedule, the WR2 will suspend irrigation without the need for rainfall accumulation.  This feature eliminates the wasteful running of the irrigation system during a rain event – saving the home owner embarrassment and potential fines / penalties.

How do I test the WR2?

If a contractor is required to test the rain or rain / freeze functionality of the WR2 product family, we recommend the following procedures: WR2 Test Procedures (PDF: 17 KB)

I have installed the WR2 system and came back to check its performance a month or two later.  When I look at the WR2 Controller Interface LCD screen, I notice the “Sensor Indicator / Pairing Status” icon does not communicate a battery life or signal strength.  What does that mean?

A WR2 Sensor that does not communicate battery life or signal strength to the WR2 Controller Interface is no longer paired.  First check the sensor battery to ensure it is making contact with the battery contacts.  Remove the battery cassette from the sensor and adjust the battery contact positions using a paper clip.  Upon replacing the battery cassette, if the sensor fails to automatically reacquire the WR2 Controller, replace the battery with a fresh battery.  If this does not correct the situation, the sensor may have been damaged or vandalized.  Replace the sensor with the appropriate model number WR2-RS (Rain Sensor only) or the WR2-RFS (Rain / Freeze Sensor only).  Both sensors can be purchased separately.

How do we use a rain sensor with a pump that is operated utilizing a pump start relay? Is there way to signal the pump that once the rain sensor activates the pump should not operate?

The only way to do this is to make sure that the common from the pump start relay is connected to the common bundle in the controller. If the sensor interrupts the common, it will interrupt the common for everything connected to the common port.

WR2 CAD Drawings

WR2 Series Wireless Rain Sensor (Indoor) Controller Interface

DWG DXF JPG PDF

WR2 Series Wireless Rain Sensor (Outdoor) Controller Interface

DWG DXF JPG PDF

WR2 Series Wireless Rain Sensor Location

DWG DXF JPG PDF

 

WR2 Illustrations


Controller Interface
and Sensor Bracket

EPS | PDF


Controller
Interface

EPS | PDF


Sensor
and Bracket

EPS | PDF

 

We are completely enamored of the new WR2....especially the features of far easier replacement of batteries, a more "squirrel-proof" mechanism (nothing can totally stop these rodents but stainless steel), self-aligning (if others get pushed around they just stay there--and don't work properly), adjustable from next to the controller (as opposed to going back up on the roof or gutter), has a cool display that customers like (as opposed to a blinking light). You can also sync up two (or more) receiving units to the same sending unit---so you don't have to install two sending units on a duplex (or apartment complex with multiple controllers.) We love the WR2!

Robert Coleman – Owner
Double Eagle Sprinkler
Garland, Texas

 

 


Our customers love the easy to read and program interactive display.  To have both a rain /freeze sensor at such a competitive price point gives us an advantage on the competition.

Randy Cramer – Owner
Greenscape Irrigation Inc
Calgary, Alberta Canada


WR2 ease of install and dependability is something I can count on from Rain Bird.

Scott Bartolome – Owner
The Sprinkler Doctor
Richardson, Texas
(Former Irritrol user
)


I like the ability to use/ install one single brand of components to complete the job. There is no guess work when you are wiring compatible components.

Keith Brady
Brady Lawn and Landscape
Boerne, Texas
(Former Hunter User
)


Our customers appreciate the quick and easy installation and set up, saving them time and money. The sturdy installation bracket is a snap to install. The bracket allows us to quickly mount the transmitter on a gutter. We can use the same bracket to mount the transmitter on a fence or arbor. The icon based programming is an added touch, very quick and simple to set up. The hinged cover adds a sleek and professional look to the completed installation

Brent Husson – President
Coastal Irrigation Inc
West Vancouver, BC
(Former Toro User
)

 


Utilizing the Rain Bird wireless rain sensor has brought improved efficiency to our irrigation installations.  There is now no restriction of wire and our technicians can properly position the sensor in an appropriate location.  Moreover, our clients are completely impressed with the controller interface which allows them to easily manage and further understand their watering needs.

Michael Bruce – Owner
Green Grass Lawn Sprinklers Ltd.
Markham, Ontario
(Former Hunter User
)

 


Finally Rain Bird has come out with a wireless rain sensor that like all of their products blows the competition away! Wireless sensors make so much sense due to their ease of mounting and because they give you greater freedom in selecting a mounting location that actually works. The signal strength feature, the low temperature cut off and the ability to suspend watering during a rain event make this product truly outstanding. Keep those great new products coming!

David Johnson
Sprinkler Works
St Petersburg, Florida
(Former Hunter User
)


Rain Bird has done it again!  They have simplified the wireless rain sensor, yet improved its reliability.  Sophistication meets reliability!  How can you beat that?

Ken Wagenbrenner – Owner
Aqua Pro Irrigation Services
Tampa, Florida
(Former Hunter User)


The Rain Bird Wireless Rain/Freeze Sensor is a win/win for landscape contractors who are looking for ways to increase revenue and for their customers who are in search of ways to save money. The sensor is easy to install and inexpensive—it also works with all existing clocks so customers are inclined to listen to you tell them how they can reduce their water bills with a small investment in this sensor. Customers will also like it the simplicity of this sensor. When it rains or gets cold, the sensor puts the irrigation system on hold so water isn’t wasted. The sensor is easy to read and understand, and it has a low battery indicator like a cell phone when the battery is getting low.

Now that my company is aware of the rain/freeze sensor, we are contacting all past clients to offer this upgrade to them before the rainy season starts so they can prevent overwatering and reduce their water bills.

Michael Galli
Founder & Head of Design
Metamorphosis Landscaping
Milbrae, California


Raintree prefers the new Rain Bird wireless rain sensor because of the easy set up. Being able to see battery life and signal strength takes a lot of the guess work out of the equation. The adjustment of the sensor can be done in front of the controller without having to climb ladders. This makes the installation time quicker and more efficient.

Steve Macartney, AWWA Certified, CIC, CLIA
Operations Manager
Raintree Irrigation and Outdoor Systems
Hamilton, Ontario, Canada


Very impressive product!  I even installed one at my own home.  My technical loving clients will be easily sold on the WR2.  Wireless is the future.

Scott Williams
Rick Skoyek Irrigation Services
Sarasota, Florida
(Former Irritrol User
)


My crew finds the WR2 easier to install and it provides many more features than what we had been using.

Larry Bosworth - Owner
Sun City Irrigation
Pinellas Park, Florida
(Both Irritrol and Hunter user
)


I like the WR2 wireless rain sensor because it is easy to install when you are on the job by yourself.  Also it is reliable and easy to program.

Peter Politis
Niagara Sprinkler Systems Inc.
New Port Richey, Florida


The WR2 Rain Sensors are easy to install.  Setup is simple.  Receiver screen is simple to understand and very functional.  The WR2 is simple, reliable, and easy to use.

Joe Nelson - Owner
The Nelson Team Inc.
Leeds Alabama


The range is great for many of my commercial sites. The icons on the user interface are great; you are able to clearly see them. The internal antenna is a great feature to help prevent vandalism (i.e. people pulling on it).

Wayne Ebanks
Nanak's Landscaping
Tampa Bay, Florida
(Former Hunter user)