Get to Know YS7903 Water Leak Sensor (Q&As)

Thomas
Thomas
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  • Q: What is a Water Leak Sensor, and how does it work?
    A: A YS7903 Water Leak Sensor is a device that detects water leaks or flooding before major damage occurs. It works by having three pairs of probes, which detect water between them, triggering an immediate response from the sensor. The sensor LED will blink red, and notifications will be sent to you via the YoLink app.
  • Q: Where can I use the Water Leak Sensor?
    A: The Water Leak Sensor can be used in any area where water leaks or flooding may occur, such as basements, laundry rooms, bathrooms, kitchens, and around water heaters and other appliances.
  • Q: How long does the battery last in the Water Leak Sensor?
    A: The battery in the Water Leak Sensor can last up to 5 years (stand by), depending on usage. If you set up the alert interval to 1 minute, and the sensor keeps alarms, the estimated battery life is about 32 days.
  • Q: How can I receive Alexa voice announcements when the Water Leak Sensor detects water?
    A: You can refer to this video tutorial:
    https://www.youtube.com/watch?v=4OoIG89L2Nc&t=72s
  • Q: The vocabulary (open/close) for sensor status on creating an Alexa routine does not match the vocabulary (normal/warning) in the YoLink App. Can this be changed?
    A: Unfortunately, the word "Open/Close" on the Alexa routine cannot be changed as this is a limitation of Alexa. In Alexa, there is no independent event for the Water Leak Sensor. YoLink uses the same event as the door sensor to make the Water Leak Sensor compatible with Alexa.

    While the vocabulary used in the YoLink App is different (normal/warning), it's important to note that the functionality of the Water Leak Sensor remains the same. The sensor will still detect water and send notifications to the YoLink app, which can then be used to trigger Alexa routines. If you have any further questions or concerns, please reach out to YoLink customer support for assistance.

  • Q: What is the query status command for the Water Leak Sensor in Alexa?
    A: Currently, Alexa only supports asking "is +device name+ open/close" for the Water Leak Sensor. For example, you can ask "is the kitchen water leak sensor open" or "is the kitchen water leak sensor closed".
  • Q: Why don't the Water Leak Sensors show up in Google Assistant?
    A: Unfortunately, YoLink Water Leak Sensors do not currently work with Google Assistant due to limitations imposed by Google. YoLink engineering team has attempted to link the Water Leak Sensors to Google Home, but Google does not support the necessary features for the sensor to function properly.

    However, the Water Leak Sensor is compatible with Alexa and IFTTT, allowing you to create customized smart home routines and receive notifications when water is detected. If you have any further questions or concerns, please reach out to YoLink customer support for assistance.

  • Q: Can I receive a phone call if water is detected by the YoLink Water Leak Sensor?
    A: Yes, you can receive a phone call if water is detected by connecting the YoLink Water Leak Sensor with IFTTT. You can create an "IF" statement that says "the Water Leak Sensor detects a leak warning", and then set the "THEN" statement to "Call you". This will trigger a phone call to be made to your specified phone number when the Water Leak Sensor detects water.

    To set this up, you will need to have an IFTTT account and connect it with your YoLink account. Then, create a new applet that links the Water Leak Sensor to the "Call you" action. If you have any issues setting this up, you can refer to the IFTTT help center or contact YoLink customer support for further assistance.

  • Q: My YoLink Water Leak Sensor is showing as offline, or it's reporting water leaks even when there is no water present. Is there a workaround for this issue?
    A: Please follow the steps below to troubleshoot the issue:

    1. Check the network status of the YoLink Hub to see if it's online.
    2. Press the SET button on the Water Leak Sensor to check if the LED indicator has a light. If there is no light, the sensor's battery may be dead or too low. Replace the battery and press the SET button to reconnect the sensor to the hub.
    3. Check the YoLink App to see if the device status has changed and if the device is online. If it's still offline, please try resetting the sensor to its factory settings.
    4. Check the communication environment between the Water Leak Sensor and the YoLink Hub. Make sure there are no obstacles between the sensor and the hub, and avoid placing the sensor in semi-closed or restricted scenarios such as underground wells/pits. The placement position has a direct relationship to the signal strength.
    5. If none of these steps solve the problem, please contact YoLink customer support for further assistance.

  • Q: How can I make a sound when water is detected by the YoLink Water Leak Sensor?
    A: Unfortunately, the YoLink Water Leak Sensor itself does not have a built-in alarm to make a sound notification when water is detected. It sends push notifications to your mobile device. The sound of the push notification will be consistent with your mobile device's system settings, so you can customize the notification sound in your phone's sound settings.

    Alternatively, the YoLink Water Leak Sensor is compatible with Alexa, so you can create routines to receive voice announcements when water is detected. You can also consider using the YoLink Speaker Hub and Siren Alarm to receive audible alerts when the sensor detects water.

  • Q: I have just installed the YoLink Water Leak Sensor. How can I test it to make sure it's working properly?
    A: To test the YoLink Water Leak Sensor, please follow these steps:

    1. Add the leak sensor to the YoLink App and confirm that it is online.
    2. Fill a basin or container with water to a depth of more than 1mm.
    3. Place the Water Leak Sensor into the basin and wait for it to detect the water.
    4. Check the YoLink App for push notifications indicating that the Water Leak Sensor has detected water.
    Note that if you need to test the Water Leak Sensor, you should complete the test and dry it before placing it in the position where it will be monitoring for leaks.

  • Q: How deep does the water need to be to trigger the alarm on the YoLink Water Leak Sensor?
    A: The YoLink Water Leak Sensor is designed to detect very small amounts of water. Only about 0.3 millimeters (a few drops of water) is enough to trigger the sensor and set off the alarm. This sensitivity allows the Water Leak Sensor to detect leaks and floods quickly, minimizing the potential damage to your home or property.
  • Q: How can I remove the silicone dots to replace the batteries in the YoLink Water Leak Sensor?
    A: The batteries in the YoLink Water Leak Sensor are designed to last for over 5 years with normal use, so battery replacement should not be necessary in the near future. However, if you do need to replace the batteries, it is recommended that you use a thin pin or needle to carefully remove the footpad.

    It's important to note that the reinstallation of screws and footpads may affect the waterproof performance of the device. So, please be careful when removing the silicone dots and ensure that they are reinstalled securely to maintain the device's waterproofing.

  • Q: What is the waterproof rating of the YoLink Water Leak Sensor, and can it withstand exposure to solvent vapors in a manufacturing environment?
    A: The YoLink Water Leak Sensor has a waterproof rating of IP68, which means that it is 100% waterproof and can be used continuously in water for a long time. This makes it suitable for use in areas where it may be exposed to liquids or damp environments.

    In terms of exposure to solvent vapors in a manufacturing environment, the sensor units are designed to withstand such conditions. However, it's important to note that exposure to solvents may affect the sensor's performance and longevity over time.

  • Q: Can the YoLink Water Leak Sensors be used outdoors in freezing temperatures?

    A: Yes, the YoLink Water Leak Sensors can be used outdoors in freezing temperatures. The recommended operating temperature range for the sensors is from -20°C to 50°C (-4°F to 122°F), which means that they can withstand a wide range of temperatures. However, it's important to note that the battery capacity of the sensor will be significantly reduced in low temperatures, and there may be a risk of battery explosion in high temperatures, which could have a negative impact on the device.

    If you plan to use the Water Leak Sensor in extreme temperature conditions, it is recommended to use lithium battery, which is better suited to handle temperature fluctuations.

  • Q: The YoLink Water Leak Detector provides a temperature value on the detailed App page. What is the purpose of this feature?
    A: The temperature value displayed on the YoLink Water Leak Detector's details page is used to detect the ambient temperature around the sensor. This feature is mainly designed to help users monitor the temperature in areas where the Water Leak Sensor is installed.

    However, it's important to note that this temperature value cannot be used to detect the temperature of the entire room or trigger actions based on temperature changes. The feature is simply meant to provide additional information to the user about the ambient temperature in the immediate vicinity of the sensor.

    It's also important to note that the temperature display is an auxiliary function and the temperature updates are not frequent or real-time due to chip limitations. The temperature will only update when the sensor sends an alert, heartbeat signal, or the SET button is pressed.

  • Q: Can the YoLink Water Leak Sensor detect an oil leak if placed under an oil tank?
    A: No, the YoLink Water Leak Sensor is designed to detect water only, and will not be able to detect an oil leak. This is because oil is an insulator, which means that it will not conduct electricity and will not trigger the sensor. If you need to detect oil leaks, you will need to use a specialized sensor designed for that purpose.
  • Q: I received a water alert on my YoLink Water Leak Sensor, but I have already fixed the leak. The sensor is still flashing, and I am not in the same location as the sensor. If I set the device to "disabled" on the Details screen until I can clean up the water completely, will that help save battery life?
    A: Yes, setting the device to "disabled" on the Details screen will help save battery life. To further extend the battery life, you can also go to the Device Details screen and set the alert interval to 4 hours. This setting will be saved in the device and will reduce the frequency of the sensor reporting leaks, which can help extend the battery life. Once the water has been completely cleaned up and the sensor is dry, you can enable the sensor again and set the alert interval back to its default setting.
  • Q: What is the maximum number of Responders I can pair with a YoLink Water Leak Sensor?
    A: With YoLink Control, there is no strict limit to the number of Responders you can pair with Water Leak Sensor. However, for optimal performance, we recommend linking up to 128 devices.
  • Q: Is there any way to configure a relay to shut something off if a condition is met? Ex, my pool pump is in a closed room, if it ever failed and leaked I’d like to shut it off automatically instead of being alerted and having to do it manually.
    A: Yes, you can configure a relay to automatically shut off your pool pump if a certain condition is met, such as detecting a water leak. Considering that pool pumps have high starting currents, you should use a YoLink Relay in conjunction with a heavy-duty "dumb" relay to handle the pool pump's power requirements.

    You can follow the instructions in the YoLink Relay manual to set up the relay system: http://www.yosmart.com/support/YS5706-UC/docs/instruction

    Additionally, you'll need a water leak sensor to detect any leaks. Once you have both the relay and sensor installed, you can create an automation rule: when the water leak sensor detects water, it will send a signal to the YoLink Relay, which will then turn off the dumb relay, consequently shutting off the pool pump.

  • Q: How can I close the valve when the sensor detects water?
    A: There are two ways to close the valve when the sensor detects water:

    Create automation in the YoLink app (requires internet connection):
    When: Water leak sensor detects a water leak (triggers an alert)
    Then: Valve controller closes the valve

    Set up YoLink Control, make sure the firmware of the valve controller is 090e or newer (no internet required) if you use YS4909 valve controller:

    First, close the valve. Next, press and hold the set button on the water leak sensor until the green LED starts blinking rapidly. Then, press and hold the set button on the valve controller until its green LED also blinks rapidly. This establishes a direct connection between the devices without the need for an internet connection.

  • Q: I have set my YoLink Water Leak Sensor's alert interval to 240 minutes multiple times, but it keeps resetting back to 5 minutes. What should I do?
    A: If you have set the alert interval on your YoLink Water Leak Sensor to 240 minutes but it keeps resetting back to 5 minutes, you may need to update the firmware on the sensor to version 030e or newer. Once you have updated the firmware, you should be able to set the alert interval to 240 minutes and have it remain at that setting.
  • Q: I am trying to direct pair (D2D) the YS4909-UC valve controller and the water leak sensor, but the valve controller does not respond when the water leak sensor detects water. What can I do?
    A: Before attempting the D2D pairing, make sure your valve is closed and that the firmware of the valve controller is version 090e or newer. You can follow the instructions in this video for the pairing process: https://www.youtube.com/watch?v=dD6oNUzuxSE. If you still encounter issues after following these steps, consider reaching out to YoLink customer support for further assistance.
  • Q: My YoLink Water Leak Sensor detected water and sent me a notification. How do I reset the device, and how do I stop receiving notifications after a water leak has been detected?
    A: To reset the YoLink Water Leak Sensor after it has detected water, you should first remove the water from the sensor. If you are unable to remove the water immediately, you can go to the Device Details screen in the YoLink App and temporarily set the "Alarm Strategy" to "disabled" and the alert interval to 4 hours. This will help conserve the battery life of the device while you work on removing the water.

    Once you have removed the water and the sensor is dry, you can enable the sensor again and set the alert interval back to its default setting.

  • Q: In automation, what is the difference between "Water Detected" and "Water Leak Alert"?
    A: "Water Detected" refers to the exact moment when the YoLink Water Leak Sensor detects the presence of water. This trigger can be used to activate automations or routines that respond to the initial detection of water.

    "Water Leak Alert" refers to each subsequent alert sent by the sensor if you have set up an alert interval. For example, if you set the alert interval to 4 hours, you will receive a "Water Leak Alert" every 4 hours until the sensor no longer detects water. This trigger can also be used to activate automations or routines that respond to ongoing water detection.

    In summary, "Water Detected" is the initial trigger for water detection, while "Water Leak Alert" refers to ongoing alerts sent by the sensor at a specified interval.

  • Q: Does D2D affect notifications? I set up D2D and app push, but when I test the sensor, the valve shut off and I did not receive app notification. What's the issue?
    A: When testing the sensors, if you are using your fingers to trigger the sensor, please do not remove your fingers from the probe immediately. This is because if you have set up D2D, it will prioritize the D2D notification over the app push notification. Therefore, if you quickly remove your fingers, the D2D notification may be triggered but the app push notification may not have enough time to be sent. To ensure both notifications are received, it is recommended to wait a few seconds after triggering the sensor before removing your fingers.

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