Rubetek Knowledge Base



Door/window sensor


Door/window sensor — device that can be fastened at any opening surface. The sensor immediately responds to the opening of the door or window on which it is installed and sends a notification to your smartphone.

You need a receiver that supports adding rubetek wireless devices to add the sensor to the mobile app and receive notifications to your smartphone. Receiver is a re-transmitter of signals from the sensors to the mobile app.

Devices that can play the role of receiver for Door/window sensor:

Wi-Fi plug RЕ-3305

Wi-Fi single switch relay RЕ-3313

Wi-Fi single switch relay with dry contact RЕ-3314

Wi-Fi double switch relay RЕ-3315

Control module RM-3715

Principle of operation

Door/window sensor consists of two parts-reed transmitter and magnet.
Transmitter is fastened at fixed surface (e.g., window frame), magnet-at moving part. If the reed switch is in the range of the magnetic field, it closes the circuit - the sensor is closed. The opening of a window or door wing opens the circuit and the Sensor detects opening. In this case sensor immediately sends alarm signal to receiver and you receive notification on smartphone.

Sensor triggering notification will be send only if security mode is activated.


Display of sensor readings in application (Open/Close)
Push- and SMS- notifications to change battery
Push and SMS-notifications about sensor triggering
Push and SMS-notifications about sensor tampering
Diagnostics of sensor functionality every 30 minutes
Display of the name and sensor location room in notification
Two-way communication and display of signal quality with receiver
Lifetime up to 2 years without battery change

Structure diagram

  • 1
  • 1

  • Battery compartment

  • 1
    Battery compartment cover
  • 1
    Tampering sensor button
  • 1
    Battery fastening

  • Installation

    1. Open cover of battery compartment by picking up the groove and insert the battery (supplied). Close the cover.
    2. Remove protective layer from mounting tape. Install transmitter so that it was located on fixed surface (window/door reveal) and magnet on moving surface (leaf). For correct operation it is necessary to provide a marking gap on the transmitter and magnet housings of max.10 mm.

    Mobile app

    Download and install rubetek application from App Store or Google Play. You can use QR-code.
    Create an account and confirm your mobile number to use the application.

    Adding to application

    1. Open rubetek application.
    2. Add receiver in application, if it was not added before
    3. Press '+' in top right angle of the main screen
    4. Select 'Add Device'

    1. Select section Safety → Door/window sensor→ RS-3215

    1. Press button on the back of sensor five times to put sensor in adding mode. If activation was successful LED will start flashing


    Find below all possible conditions of sensor tile on the main screen.

    Door/window sensor
    Sensor is active. Door is closed

    Door/window sensor
    Sensor is active. The door is opened. Security mode is off

    Door/window sensor
    Sensor is active. The door is opened. Security mode is on

    Door/window sensor
    Change battery

    Door/window sensor
    Not available
    Sensor is not available 30 minutes or more

    Door/window sensor
    Sensor tempering


    If you have hubs, you can set up different automations. E.g., automatic switching on the light at door opening or switching off air conditioner when window is open.

    Other opportunities

    In combination with other devices, such as control module RM-3715, you can create a room climate control system that helps maintain a comfortable room temperature and extend the life of the air conditioner.

    In a room with closed windows, the energy consumption of the air conditioner is minimal, because it works in idle mode. When the window is open, the temperature in the room will constantly rise, and the air conditioner will turn on more often, trying to bring it to the desired value, which significantly increases the power consumption and the load on the compressor.

    Opening sensor allow controlling air supply, set uping the load on air conditioner compressor and therefore extending its life time. In addition, you will know about when air conditioner is on and off, you will receive notification to smartphone.

    But the most important is that the scenario will activate even in case of failure of Internet network. Control module saves the scenario and it will operate locally.


    Press and hold the tile on the screen to open sensor settings.

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    Sensor name
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    Location room
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    Notifications settings
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    Hide/display the sensor on the main screen
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    Add to/remove from Favorites
  • 1
    Battery charge level
  • 1
    Last activity
  • 1
    Event log
  • 1
    Advanced device data
  • 1
    Delete Sensor from the Home app

  • With a one scale division signal, we do not guarantee stable operation of the security system. Move the device to improve signal quality.

    When the battery level is less than 15%, you will be notified to replace the battery.

    The signal transmission power is automatically set uped and directly affects the battery life.

    Event log

    The 'Events' tab displays the chronology of sensor triggering with its name and room location. Tab is in the lower application menu.

    Push notifications

    To use this function you should permit rubetek application to send push notifications. You can do it in your mobile phone settings. Notifications on opening will be sent only in Security mode.


    How can I check that sensor is functioning?
    The device communicates with receiver every 30 min. to check functionality. Check the date and time of the last check in the sensor settings (Last Activity).
    Why don't I get push and SMS-notifications about sensor triggering?
    Check the signal strength of the Sensor with the receiver and whether notification permission for the rubetek app is enabled in your smartphone settings. Notifications are received only if Security mode is switched on.
    Where shouldn't the sensor be installed?
    Neal metal objects, causing radio signal attenuation.
    Can the sensor be installed outdoors?
    No, it is designed only for indoor installation.
    Why is the battery dead faster than 3 years?
    Battery life is affected by a number of factors: ambient temperature, level of communication with the receiver, and installation location.

    If you can't solve the problem yourself, contact technical support at


    Model RS-3215
    Connection type RF 868 MHz
    Operation range up to 200 m at open territory
    Operating voltage 3 V
    Power component Battery CR1632
    Battery life-time up to 3 years
    Operating Temperature 0°C…+40°C
    Operating humidity up to 80% (no condensation)
    Installation place indoor
    Mobile app You can't add it directly to the mobile app
    Transmitter/magnet dimensions 22×45×11/ 11×26×9 mm
    Transmitter/magnet weight 9/5 g

    Content of delivery

    Door/window sensor RS-3215 1 pc
    Battery CR2032 1 pc
    3M tape 1 pc
    Manual 1 pc
    Warranty card 1 pc