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YoLink LoRa 1/4 Mile Long Range Smart Water Leak Sensor 2 with Cable Sensor Works with Alexa and IFTTT, Hub Required

  • $22.95
  • $29.99
Shipping calculated at checkout.




  • Smart water detector with a built-in siren, detects the presence or absence of water and displays the status on the YoLink app
  • Note: For water detection, only, without an integral siren, consider our original Water Leak Sensor



  • Two Modes: Water Leak Detection Mode and Water Level Detection Mode
  • The remote probe offers location flexibility; wired remote sensor may be placed in tight spaces
  • Portable; may be placed anywhere in your home or wall-mounted
  • Wireless operation; no 120V outlet or wiring required
  • Battery-powered (two standard alkaline AAA batteries, included)
  • LoRa long-range/low-power technology offers 2+ years of battery life, compared to 1 year for other brands
  • Real-time water sensor status displayed on the YoLink app
  • Alexa voice assistant and IFTTT integration
  • YoLink Control allows for the Water Leak Sensor to directly control a YoLink Gas/Water Valve Controller, or Siren Alarm, or other YoLink devices such as outlets/plugs and controlled lights, without an internet connection
  • YoLink’s industry-leading long range communication allows for operation in larger homes and in areas difficult for other wireless systems, such as basements, separate garages/structures, and even outside your home



  • Exceptional value; high-quality wireless smart leak/flooding detection at a great price
  • Be informed immediately of off-normal environmental conditions, such as water from leaks or flooding, in your home and property, before expensive repairs are required
  • Be informed immediately of low water levels such as insufficient water supplies for pets
  • Create custom automation using the YoLink app, to trigger responses from other YoLink devices, such as the Siren Alarm
  • Compact design and wired probe allows for placing the sensor where others may not fit
  • Easy to install and portable; move to other locations as needed
  • Lower cost of ownership than other technologies; low-power operation means batteries may last over 2 years, compared to 1 or less from other brands
  • Carefree maintenance, with more years between battery replacement
  • Low-battery alerts give you advanced warning that it is almost time to replace the batteries
  • Uses standard alkaline batteries (2 AAA batteries); no Lithium or special batteries required
  • Works with the convenient and user-friendly YoLink app
  • Extremely easy and fast installation using the YoLink app with Scan & Play



  • Water level detection applications include monitoring water levels in water supplies, such as those used for fish tanks, pets, livestock, plants, gardening, horticulture, and agriculture
  • Place the YoLink Water Leak Sensor 2 anywhere that is at risk of high moisture or water, due to leaks or flooding
  • Use the YoLink smartphone app to remotely monitor the status of your water leak sensors in your home, rental property, condo, summer home, or business (internet connection and YoLink Hub required)
  • YoLink’s industry-leading long range communication allows for placing the sensor in separate garage buildings, sheds, storage buildings, barns, greenhouses, etc.
  • Some common water detection applications include:
  • Locations at or below grade, subject to water incursion
  • Basement floors
  • Near sump pumps
  • Under sinks
  • Next to the toilets
  • Under or near laundry machines
  • Under dishwashers
  • Under refrigerators & ice machines
  • Under fish tanks/aquariums
  • Near swimming pool pumps/equipment*
  • Inside hot tubs*
    •  *Refer to device environmental limitations in Technical Specs, above. Use this device outside the recommended ranges at your own risk; warranty may be voided, etc.


  • YoLink Hub is required. Starting your first YoLink system? Consider one of our kits
  • Pair your sensor with the YoLink Siren Alarm, for an additional, attention-getting, high-dB alarm activation
  • Pair your sensor with the YoLink smart Gas/Water Valve Controller, to automatically turn off a water valve if a leak is detected


  • YoLink Hub with an internet connection (wired Ethernet or 2.4GHz Wi-Fi). Refer to the Hub user guide for additional information
  • Smartphone or tablet running iOS 9 or higher, Android 4.4 or higher
  • Tools Required: None
  • Installation Difficulty Level: Super Easy


  • Semtech® LoRa® RF Module YL09 microcontroller with 32-Bit RISC processor
  • Color: White
  • Set button (Front)
  • Power: 2 AAA batteries (3V DC)
  • Dimension [L x W x D]: 2.44 x 2.44 x 0.80 inches (83.06 x 30.99 x 14.99 mm)
  • Cable Sensor: 4.2 feet (1.2 meters), can be extended to 10 feet
  • Environmental:
  • Operating Temperature Range: 32°F – 122°F (0°C – 50°C)
  • Operating Humidity Range: ≤95%RH non-condensing
  • Intended for indoor use only


  • (1) YoLink Water Leak Sensor 2 (batteries included)
  • (1) Sensor Cable
  • (1) Mounting Hook
  • (1) Quick Start Guide