How to Set Up Your Aqara Water Leak Sensor

10-20 minutes

What You'll Need

  • Aqara Water Leak Sensor
  • Aqara Hub (Hub M1S, M2, M3, or compatible)
  • Smartphone with Aqara Home app
  • Wi-Fi network connected to hub
  • CR2032 battery (included)

Step-by-Step Setup

  1. Set Up Hub First: Ensure your Aqara Hub is connected to the app and Wi-Fi before adding the sensor.
  2. Open Aqara App: Go to Home and tap (+) in the top right corner.
  3. Select Water Leak Sensor: Navigate to "Add Device" and select Water Leak Sensor from the list.
  4. Enter Pairing Mode: Press and hold the water drop logo on the sensor for 10 seconds until the blue LED blinks three times.
  5. Release Button: Let go when the LED blinks. It will blink once more and begin searching for the hub.
  6. Wait for Connection: Keep the sensor close to the hub during pairing. The app will confirm when paired.
  7. Test Connection: Press the reset button briefly. If the hub makes a voice prompt and the app icon blinks, pairing is successful.
  8. Place Sensor: Position the sensor where water might leak (under sinks, near water heaters, washing machines).

Key Features

  • Detects water leaks via contact probes on bottom
  • Instant push notifications when water detected
  • Works with HomeKit, Alexa, and Google Assistant (via hub)
  • Trigger automations (shut off water valve, turn on lights)
  • Long battery life (approximately 2 years)
  • IP67 water-resistant design

Troubleshooting

  • Won't pair: Keep the sensor within 10 meters of the hub. Press button every second during pairing if issues persist.
  • Hub not in pairing mode: Ensure the hub firmware is up to date before pairing new devices.
  • Maximum devices reached: Each hub supports up to 32 child devices. Remove unused devices if at limit.
  • LED not blinking: Replace the CR2032 battery. Use a coin to twist open the battery compartment.
  • Factory reset: Long press the water drop icon for 5 seconds until LED flashes continuously.