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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.

  • Rain Bird WR2RFC rain-freeze sensor product detail
    Rain Bird WR2RFC wireless rain-freeze combo sensor

    Rain Bird WR2RFC Wireless Rain/Freeze Sensor Combo

    Rain Bird
    $ 88.05 - $ 88.05
    $ 88.05
    $ 88.05 - $ 88.05
    $ 88.05

    Rain Bird WR2RFC Wireless Rain/Freeze Sensor Combo Brand: Rain Bird | SKU: WR2RFC Product OverviewKeep an existing irrigation schedule from running...

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    $ 88.05 - $ 88.05
    $ 88.05
    $ 88.05 - $ 88.05
    $ 88.05
  • Rain Bird WR2RFC-48 wireless rain and freeze sensor combo with 48 hour rain delay

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

    Rain Bird
    $ 89.04 - $ 89.04
    $ 89.04
    $ 89.04 - $ 89.04
    $ 89.04

    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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    $ 89.04 - $ 89.04
    $ 89.04
    $ 89.04 - $ 89.04
    $ 89.04
  • Rain Bird RSDBEX rain sensor with latching bracket and extension wire

    Rain Bird RSDBEX RSD-BEx Wired Rain Sensor with Latching Bracket

    Rain Bird
    $ 26.35 - $ 26.35
    $ 26.35
    $ 26.35 - $ 26.35
    $ 26.35

    Rain Bird RSDBEX RSD-BEx Wired Rain Sensor with Latching Bracket Brand: Rain Bird | SKU: RSDBEX Product OverviewPause scheduled irrigation after ra...

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    $ 26.35 - $ 26.35
    $ 26.35
    $ 26.35 - $ 26.35
    $ 26.35
  • Irritrol RS1000 rain sensor product detail for sprinkler system weather shutoff
    Irritrol RS1000 wireless rain sensor for irrigation controller shutoff

    Irritrol - RS1000 - Wireless Rain Sensor

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

    Brand: Irritrol    SKU: RS1000Product OverviewThe Irritrol RS1000 is a wireless rain-sensor system that interrupts automatic irrigation after the s...

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    $ 82.19 - $ 82.19
    $ 82.19
    $ 82.19 - $ 82.19
    $ 82.19
  • Rain Bird FG100 1 inch wired plastic flow sensor with NPT threaded unions

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

    Rain Bird
    $ 139.99 - $ 139.99
    $ 139.99
    $ 139.99 - $ 139.99
    $ 139.99

    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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    $ 139.99 - $ 139.99
    $ 139.99
    $ 139.99 - $ 139.99
    $ 139.99
  • K-Rain 3208-WRFS wireless rain-freeze sensor for Pro EX irrigation controllers

    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

    K-Rain 3208-WRFS Wireless Rain/Freeze Sensor for PRO EXBrand: K-Rain    SKU: 3208-WRFSProduct OverviewThe K-Rain 3208-WRFS is a wireless rain/freez...

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    $ 45.99 - $ 45.99
    $ 45.99
    $ 45.99 - $ 45.99
    $ 45.99
  • Rain Bird FS100P flow sensor product detail
    Rain Bird FS100P 1 inch PVC tee flow sensor
    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 hardwired rain sensor for irrigation controllers

    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 HRC-100-RS-HW Hardwired Rain Sensor Brand: Hydro-Rain | SKU: HRC-100-RS-HW Product Overview The Hydro-Rain HRC-100-RS-HW is a hardwi...

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    $ 21.89 - $ 21.89
    $ 21.89
    $ 21.89 - $ 21.89
    $ 21.89
  • Hunter Industries MINICLIK Mini-Clik rain sensor for irrigation controllers

    Hunter Industries - MINICLIK - Mini-Clik Rain Sensor

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

    Brand: Hunter Industries    SKU: MINICLIK Product Overview The Hunter MINICLIK Mini-Clik is a wired rain sensor designed to interrupt scheduled irr...

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    $ 32.71 - $ 32.71
    $ 32.71
    $ 32.71 - $ 32.71
    $ 32.71
  • Rain Bird WR2RFI sensor interface product detail
    Rain Bird WR2RFI interface for rain and freeze sensors
    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
  • Rain Bird FS200P 2 inch PVC tee flow sensor
    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
  • Hydro-Rain HRC-100-RS-RF wireless rain freeze sensor for irrigation control

    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 HRC-100-RS-RF Wireless Rain & Freeze Sensor Brand: Hydro-Rain | SKU: HRC-100-RS-RF Product Overview The Hydro-Rain HRC-100-RS-RF...

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    $ 76.74 - $ 76.74
    $ 76.74
    $ 76.74 - $ 76.74
    $ 76.74
  • Rain Bird PT322 pulse transmitter with no display
    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 inch PVC tee flow sensor
    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
  • Rain Bird FS350B 3-1/2 inch brass insert type flow sensor
    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

    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

    Toro EVO-WS Wireless ET Weather Sensor

    Toro
    $ 79.99 - $ 79.99
    $ 79.99
    $ 79.99 - $ 79.99
    $ 79.99

    The XTRA SMART Wireless Weather Sensor is designed to work exclusively with any indoor EC-XTRA timer. The sensor monitors rainfall, solar radiation...

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    $ 79.99 - $ 79.99
    $ 79.99
    $ 79.99 - $ 79.99
    $ 79.99
    Sold out
  • Rain Bird FG100SS slip flow sensor
    Sold out

    Rain Bird - FG100SS - Flow Sensor, Slip

    Rain Bird
    $ 92.39 - $ 92.39
    $ 92.39
    $ 92.39 - $ 92.39
    $ 92.39

    Spec Sheet Help protect your customers’ property and landscape with the FG100 Flow Sensor. Designed for residential and smaller commercial applicat...

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    $ 92.39 - $ 92.39
    $ 92.39
    $ 92.39 - $ 92.39
    $ 92.39
    Sold out
  • Rain Bird ANEMOMETER wind speed sensor

    Rain Bird - ANEMOMETER - Anemometer Wind Speed Sensor

    Rain Bird
    $ 1,177.04 - $ 1,177.04
    $ 1,177.04
    $ 1,177.04 - $ 1,177.04
    $ 1,177.04

    Spec Sheet Accurate wind speed measurement for high-wind shutdown or interrupt of irrigation programs Precision three-cup anemometer for measuring...

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    $ 1,177.04 - $ 1,177.04
    $ 1,177.04
    $ 1,177.04 - $ 1,177.04
    $ 1,177.04
  • Rain Bird LXIVMSEN field device for signal line and analog or digital sensor

    Rain Bird IVMSEN Field Device for Signal Line and Analog or Digital Sensor

    Rain Bird
    $ 714.50 - $ 714.50
    $ 714.50
    $ 714.50 - $ 714.50
    $ 714.50

    Field device for interfacing between signal line and analog or digital sensor. IVM-SEN Interfaces with LX-IVM to control weather sensors or flow s...

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    $ 714.50 - $ 714.50
    $ 714.50
    $ 714.50 - $ 714.50
    $ 714.50
  • Rain Bird UFS200 2 inch ultrasonic flow sensor with NPT connection

    Rain Bird - UFS200 - 2" Ultrasonic Series Flow, NPT

    Rain Bird
    $ 1,426.43 - $ 1,426.43
    $ 1,426.43
    $ 1,426.43 - $ 1,426.43
    $ 1,426.43

    Spec Sheet  Install Manual Compatible with IQ3, IQ4, Maxicom, SiteControl, LINK, Site SAT, ESP- LXD, LXME2 Pro, LXMEF, ESP-ME3 and LX-IVM Contro...

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    $ 1,426.43 - $ 1,426.43
    $ 1,426.43
    $ 1,426.43 - $ 1,426.43
    $ 1,426.43
  • Rain Bird UFS150 1.5 inch ultrasonic flow sensor with NPT connection

    Rain Bird - UFS150 - 1.5" Ultrasonic Series Flow, NPT

    Rain Bird
    $ 1,342.00 - $ 1,342.00
    $ 1,342.00
    $ 1,342.00 - $ 1,342.00
    $ 1,342.00

    Spec Sheet  Install Sheet Compatible with IQ3, IQ4, Maxicom, SiteControl, LINK, Site SAT, ESP- LXD, LXME2 Pro, LXMEF, ESP-ME3 and LX-IVM Control...

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    $ 1,342.00 - $ 1,342.00
    $ 1,342.00
    $ 1,342.00 - $ 1,342.00
    $ 1,342.00

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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