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Irrigation Sensors

Take your irrigation system from simply “on a schedule” to smart and responsive. In our Irrigation Sensors collection you’ll find devices that provide real-time data, helping your system water only when needed—avoiding waste, runoff and stressed plants.

Sensors like rain shut-off, soil-moisture probes, flow & pressure meters, freeze sensors and more allow you to monitor key conditions in your landscape. For instance, a rain sensor stops irrigation when sufficient rainfall has occurred. Soil-moisture sensors detect moisture levels in the root-zone and override fixed timers when the ground is still wet. Flow sensors monitor water movement through your system, alerting you to leaks or blockages.

In this collection you’ll find:

  • Rain sensors that mount outdoors to prevent irrigation after storm events. 

  • Soil-moisture and temperature sensors that measure root-zone conditions for smarter watering.

  • Flow, pressure and system-health sensors that help you detect inefficiencies or system faults early.

  • Sensors compatible with DIY systems, homeowner setups and pro irrigation systems—so whether you’re doing a home lawn or a large landscape you’re covered.

Why shop with Big Frog Supply? Because we understand irrigation, plumbing and lighting—and we know sensors aren’t just “extras,” they’re performance tools. We bring you sensor equipment, clear specs and real-world help to ensure you select the right device for your system size, environment and budget.

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    Rain Bird - WR2RFC - Wireless Rain-Freeze Combo

    Rain Bird
    $ 78.25 - $ 78.25
    $ 78.25
    $ 78.25 - $ 78.25
    $ 78.25

    Rain Bird WR2RFC Wireless Rain/Freeze Sensor & Timer  Take the guesswork out of watering and save up to 35% on water usage with the Rain Bird W...

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    $ 78.25 - $ 78.25
    $ 78.25
    $ 78.25 - $ 78.25
    $ 78.25

  • Rain Bird WR2RFC-48 Wireless Rain/Freeze Sensor Combo with 48 Hour Rain Delay

    Rain Bird
    $ 84.55 - $ 84.55
    $ 84.55
    $ 84.55 - $ 84.55
    $ 84.55

    Rain Bird WR2RFC-48 Rain Freeze Sensor with 48 Hour Delay Stop watering in the rain and save money with the Rain Bird WR2RFC-48 Wireless Rain/Freez...

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    $ 84.55 - $ 84.55
    $ 84.55
    $ 84.55 - $ 84.55
    $ 84.55
  • Rain bird - Rain Sensor with Latching Bracket and Extension Wire - - Irrigation - Big Frog Supply

    Rain Bird - RSDBEX - RSD Series Rain Sensor with Latching Bracket and Extension Wire

    Rain Bird
    $ 21.35 - $ 21.35
    $ 21.35
    $ 21.35 - $ 21.35
    $ 21.35

    Install Manual The Rain Bird® RSD Series Rain Sensor automatically shuts off your sprinkler system when it rains, so you don’t have to worry when y...

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    $ 21.35 - $ 21.35
    $ 21.35
    $ 21.35 - $ 21.35
    $ 21.35
  • Sold out

    Rain Bird - MJ100B - 1 in. Brass Flow Sensor for ESP-ME3

    Rain Bird
    $ 140.13 - $ 140.13
    $ 140.13
    $ 140.13 - $ 140.13
    $ 140.13

    Choose Affordable Protection Over Costly Leaks With cost-effective flow-sensing technology from Rain Bird, you can help homeowners avoid small...

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    $ 140.13 - $ 140.13
    $ 140.13
    $ 140.13 - $ 140.13
    $ 140.13
    Sold out

  • Irritrol - RS1000 - Wireless Rain Sensor

    Irritrol
    $ 82.19 - $ 82.19
    $ 82.19
    $ 82.19 - $ 82.19
    $ 82.19

      Taking water management to the next level, the proven Irritrol® RainSensor™ Series makes watering in the rain a mistake of the past. The reliable...

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    $ 82.19 - $ 82.19
    $ 82.19
    $ 82.19 - $ 82.19
    $ 82.19

  • Hunter Industries - WR-CLIK - RAIN-CLIK System WR-CLIK

    Hunter Industries
    $ 89.77 - $ 89.77
    $ 89.77
    $ 89.77 - $ 89.77
    $ 89.77

    Most rain-sensing devices work by accumulating a set amount of rainfall before a switch is activated that interrupts the circuit from the controlle...

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    $ 89.77 - $ 89.77
    $ 89.77
    $ 89.77 - $ 89.77
    $ 89.77

  • Rain Bird FG100 1-INCH WIRED PLASTIC FLOW SENSOR WITH NPT THREADED UNIONS

    Rain Bird
    $ 103.99 - $ 103.99
    $ 103.99
    $ 103.99 - $ 103.99
    $ 103.99

    Rain Bird FG100 1-INCH Flow Sensor Take full control of your water usage and protect your landscape with the Rain Bird FG100 1-INCH WIRED PLASTIC...

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    $ 103.99 - $ 103.99
    $ 103.99
    $ 103.99 - $ 103.99
    $ 103.99

  • K Rain - 3208-WRFS - Wireless Rain-Freeze Sensor for Pro EX

    K-Rain
    $ 45.99 - $ 45.99
    $ 45.99
    $ 45.99 - $ 45.99
    $ 45.99

    The K-Rain Rain/Freeze and Rain Sensors will turn your irrigation controller into an expert water manager by efficiently suspending watering during...

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    $ 45.99 - $ 45.99
    $ 45.99
    $ 45.99 - $ 45.99
    $ 45.99
  • Rain Bird - FS100P - 1 in. PVC Tee Flow Sensor - - Irrigation - Big Frog Supply
    Sold out

    Rain Bird FS100P 1" PVC Tee Flow Sensor

    Rain Bird
    $ 588.61 - $ 588.61
    $ 588.61
    $ 588.61 - $ 588.61
    $ 588.61

    Rain Bird FS100P 1 Inch Tee Flow Sensor Gain complete control over your irrigation system with the Rain Bird FS100P 1" PVC Tee Flow Sensor. This es...

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    $ 588.61 - $ 588.61
    $ 588.61
    $ 588.61 - $ 588.61
    $ 588.61
    Sold out

  • Hydro-Rain - HRC-100-RS-HW - HRC Rain Sensor Hardwire

    Hydro-Rain
    $ 21.89 - $ 21.89
    $ 21.89
    $ 21.89 - $ 21.89
    $ 21.89

    Hydro-Rain’s HRC 100 hardwire sensor is designed to save water and limit damage to foliage by turning off sprinkler systems during rainy weather. A...

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    $ 21.89 - $ 21.89
    $ 21.89
    $ 21.89 - $ 21.89
    $ 21.89
  • Sold out

    Rain Bird - WR2RFI - Interface Only for Rain/Freeze Sensors

    Rain Bird
    $ 52.65 - $ 52.65
    $ 52.65
    $ 52.65 - $ 52.65
    $ 52.65

    Spec Sheet Install Manual Rain and rain/freeze sensors are becoming “must have” components for irrigation systems these days. Rain Bird designed th...

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    $ 52.65 - $ 52.65
    $ 52.65
    $ 52.65 - $ 52.65
    $ 52.65
    Sold out
  • Weathermatic - SLW15 Wireless Weather Station - - Lawn and Garden - Big Frog Supply
    Sold out

    SLW15 Wireless Weather Station

    Weathermatic
    $ 367.45 - $ 367.45
    $ 367.45
    $ 367.45 - $ 367.45
    $ 367.45

    Finally, a wireless device without wires! No time is wasted mounting and installing complex wiring for an external receiver. SLW15 offers a plug-n-...

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    $ 367.45 - $ 367.45
    $ 367.45
    $ 367.45 - $ 367.45
    $ 367.45
    Sold out

  • Hunter Industries - MINICLIK - Mini-Clik Rain Sensor

    Hunter Industries
    $ 32.71 - $ 32.71
    $ 32.71
    $ 32.71 - $ 32.71
    $ 32.71

    Irrigating a landscape during a rainstorm not only results in oversaturated plants and turf, it also wastes water. Hunter's Mini Clik rain sensor p...

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    $ 32.71 - $ 32.71
    $ 32.71
    $ 32.71 - $ 32.71
    $ 32.71
  • Rain Bird - FS200P - 2 in. PVC Tee Flow Sensor - - Irrigation - Big Frog Supply
    Sold out

    Rain Bird - FS200P - 2" PVC Tee Flow Sensor

    Rain Bird
    $ 741.08 - $ 741.08
    $ 741.08
    $ 741.08 - $ 741.08
    $ 741.08

    Spec Sheet Install Manual Rain Bird flow sensors send flow data to central control or stand-alone controller systems for precise and accurate flow...

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    $ 741.08 - $ 741.08
    $ 741.08
    $ 741.08 - $ 741.08
    $ 741.08
    Sold out
  • Rain Bird - FS100B - 1 in. Brass Tee Flow Sensor - - Irrigation - Big Frog Supply
    Sold out

    Rain Bird - FS100B - 1" Brass Tee Flow Sensor

    Rain Bird
    $ 748.17 - $ 748.17
    $ 748.17
    $ 748.17 - $ 748.17
    $ 748.17

    Spec Sheet Install Manual Rain Bird flow sensors send flow data to central control or stand-alone controller systems for precise and accurate flo...

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    $ 748.17 - $ 748.17
    $ 748.17
    $ 748.17 - $ 748.17
    $ 748.17
    Sold out
  • Sold out

    K Rain - 3208-HRS - Hardwired Rain Sensor

    K-Rain
    $ 45.90 - $ 45.90
    $ 45.90
    $ 45.90 - $ 45.90
    $ 45.90

    The K-Rain Rain/Freeze and Rain Sensors will turn your irrigation controller into an expert water manager by efficiently suspending watering during...

    View full details
    $ 45.90 - $ 45.90
    $ 45.90
    $ 45.90 - $ 45.90
    $ 45.90
    Sold out
  • Rain Bird - PTPWRSUPP - 120V to 12V Power Supply for PT322 or PT3002 Pulse Transmitter - - Irrigation - Big Frog Supply

    Rain Bird - PTPWRSUPP - 120V to 12V Power Supply for PT322 or PT3002 Pulse Transmitter

    Rain Bird
    $ 112.26 - $ 112.26
    $ 112.26
    $ 112.26 - $ 112.26
    $ 112.26

    Power supply for Rain Bird PT322 or PT3002 pulse transmitter.

    $ 112.26 - $ 112.26
    $ 112.26
    $ 112.26 - $ 112.26
    $ 112.26
  • Rain Bird - PT322 - Pulse Transmitter - No Display - - Irrigation - Big Frog Supply
    Sold out

    Rain Bird - PT322 - Pulse Transmitter - No Display

    Rain Bird
    $ 602.80 - $ 602.80
    $ 602.80
    $ 602.80 - $ 602.80
    $ 602.80

    Install Manual Reliable solid-state design Transmits flow data from FS series flow sensors Programmable from a laptop computer Dimensions Widt...

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    $ 602.80 - $ 602.80
    $ 602.80
    $ 602.80 - $ 602.80
    $ 602.80
    Sold out
  • Rain Bird - FS150P - 1 1/2 in. PVC Tee Flow Sensor - - Irrigation - Big Frog Supply
    Sold out

    Rain Bird - FS150P - 1 1/2" PVC Tee Flow Sensor

    Rain Bird
    $ 638.25 - $ 638.25
    $ 638.25
    $ 638.25 - $ 638.25
    $ 638.25

    Spec Sheet Install Manual Rain Bird flow sensors send flow data to central control or stand-alone controller systems for precise and accurate f...

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    $ 638.25 - $ 638.25
    $ 638.25
    $ 638.25 - $ 638.25
    $ 638.25
    Sold out
  • Weathermatic - SLW1 Economy On-Site Weather Station - - Lawn and Garden - Big Frog Supply
    Sold out

    SLW1 Economy On-Site Weather Station

    Weathermatic
    $ 149.95 - $ 149.95
    $ 149.95
    $ 149.95 - $ 149.95
    $ 149.95

    Delivers smart evapotranspiration watering schedules straight to your SmartLine? controller. Water conservation has always been our primary focus. ...

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    $ 149.95 - $ 149.95
    $ 149.95
    $ 149.95 - $ 149.95
    $ 149.95
    Sold out
  • Sold out

    Rain Bird - SMRT-Y - Soil Moisture Sensor Kit

    Rain Bird
    $ 277.39 - $ 277.39
    $ 277.39
    $ 277.39 - $ 277.39
    $ 277.39

    Spec Sheet  Install Manual Accurate - Reliable - Smart It’s time for a little feedback from the roots. With the new SMRT-Y Soil Moisture Sensor...

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    $ 277.39 - $ 277.39
    $ 277.39
    $ 277.39 - $ 277.39
    $ 277.39
    Sold out
  • Rain Bird - FS350B - 3 1/2 in Brass Insert Type Flow Sensor - - Irrigation - Big Frog Supply
    Sold out

    Rain Bird - FS350B - 3 1/2" Brass Insert Type Flow Sensor

    Rain Bird
    $ 851.00 - $ 851.00
    $ 851.00
    $ 851.00 - $ 851.00
    $ 851.00

    Rain Bird flow sensors send flow data to central control or stand-alone controller systems for precise and accurate flow monitoring. Rain Bird fl...

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    $ 851.00 - $ 851.00
    $ 851.00
    $ 851.00 - $ 851.00
    $ 851.00
    Sold out
  • Weathermatic - SLW5 - Wireless Weather Station - - Lawn and Garden - Big Frog Supply
    Sold out

    SLW5 - Wireless Weather Station

    Weathermatic
    $ 367.45 - $ 367.45
    $ 367.45
    $ 367.45 - $ 367.45
    $ 367.45

    The SLW5 is a wireless weather station operating on a 900 MHz bi-directional frequency. Maximum range is 1500 feet (457m) Line of Sight (LOS). The ...

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    $ 367.45 - $ 367.45
    $ 367.45
    $ 367.45 - $ 367.45
    $ 367.45
    Sold out

  • Hydro-Rain - HRC-100-RS-RF - HRC 100 Wireless Rain/Freeze Sensor

    Hydro-Rain
    $ 76.74 - $ 76.74
    $ 76.74
    $ 76.74 - $ 76.74
    $ 76.74

    Hydro-Rain’s HRC 100 wireless rain and freeze sensor saves water by automatically suspending irrigation watering cycles when it rains or freezes or...

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    $ 76.74 - $ 76.74
    $ 76.74
    $ 76.74 - $ 76.74
    $ 76.74

Pro tip: Install your sensor in a representative location—e.g., a soil-moisture sensor in the root-zone of the typical plant type, a rain sensor in an open area away from overhangs—and configure the threshold settings according to your site conditions. Regularly check sensor wiring, cleaning and calibration. A good sensor can save significant water and protect your landscape long-term.

Browse the collection, pick the sensor type that fits your goals, and start monitoring smarter today.

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