Rubetek Knowledge Base



Motion sensor


Motion sensor—wireless device that helps to improve safety of your house. If motion is detected in the room it immediately sends notification to your smartphone and to rubetek Cloud. You can also use it to create scenarios, such as switch on/off light sources or appliances depending on motion in the room.
The options for use are limited only by your imagination.

Receiver that will transmit commands to other devices of Smart Home and to rubetek Cloud is required for connection of sensor.

Available devices:

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

The sensor also monitors changes in infrared radiation caused by human movement or activity indoors. When motion is detected, the device transmits a radio signal to the receiver and then triggers a scenario of Smart Home system components or sends a command to rubetek Cloud.
The sensor will also respond to climate devices such as underfloor heating or air conditioning, which can lead to false alarms. It shall be considered when selecting place of installation.


Display of sensor readings in application
Two-way communication and display of signal quality with receiver
Push- and SMS- notification on motion detection
Push- and SMS- notifications at tampering and at low sensor battery
Diagnostics of sensor functionality every 30 minutes
Display of the name and sensor location room in notification
Lifetime up to 2 years without battery change

Structure diagram

  • 1
    LED indicator

  • Battery compartment

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

  • Installation

    1. Open cover of battery compartment by picking up the groove and insert the battery (supplied) with the '+' sign upwards. Close the cover.

    1. Install sensor on flat and clean surface by means of double-sided tape, included in the scope of supply. It is important to consider orientation of the device. When locking the position of the sensor, install it so that the groove in the battery compartment cover faces upward:

    Before locking the position of sensor by means of double-sided tape, add it in rubetek application.

    Detection area

    Optimal installation height: 2-2.5 m

    Installation place within the area of signal receipt by receiver.

    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 → Motion sensor → Motion sensor RS-3205

    1. Press and hold button more than 5 sec. to put sensor in adding mode. Diode on front side shall start flashing


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

    Motion sensor
    Sensor is active. Motion is not detected

    Motion sensor
    Motion detected!
    Sensor is active. Motion detected Mode 'Security' is on

    Motion sensor
    Motion detected!
    Sensor is active. Motion detected Mode 'Security' is on

    Motion sensor
    Change battery

    Motion sensor
    Not available
    Sensor is not available 30 minutes or more

    Motion sensor
    Sensor housing tampering


    You can automate your smart devices by creating scenarios in the rubetek mobile app.

    1. Press '+' in top right angle of the main screen
    2. Select 'Add Automation' from the bottom pop-up menu

    1. Set scenario name so that it is not confused with others
    2. Create conditions of scenario activation: If → Device condition → Motion sensor → Motion detected
    3. Specify the action that will occur if the condition is met: Then → Device condition → Control unit → Switch on

    Other opportunities

    You can improve your comfort, adding other smart devices to motion sensor. For example, in conjunction with control unit RE-3313 or RE-3315, you can create an autonomous lighting control system in your home. Connect your home light sources to the control unit and create a scenario to switch them on/off depending on the status of sensor.

    In conjunction with light sensor RL-3201, you can create a complex home lighting control system. It will be guided not only by motion in the room, but also by the level of light.


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

  • 1
    Sensor name
  • 1
    Location room
  • 1
    Notifications settings
  • 1
  • 1
    Hide/display the sensor on the main screen
  • 1
    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. Also here are messages about low battery power, tampering attempts, and notifications about the triggering of other devices, if any. 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.


    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.
    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).
    Can I set sensitivity level of the sensor?
    No. This parameter is not set uped.
    Why don't I get push and SMS-notifications about sensor triggering?
    Check communication level of sensor and receiver. Also make sure that your smartphone settings are enabled to allow notifications from the rubetek mobile app.
    Where shouldn't the sensor be installed?
    Neal metal objects, causing radio signal attenuation.
    Can the sensor be installed outdoors?
    No. Sensor is designed for indoor installation.

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


    Model RS-3205
    Connection type RF 868 MHz
    Operation range up to 200 m at open territory
    Sensing element PIR-sensor
    Horizontal viewing angle 110º
    Vertical viewing angle 90º
    Gate threshold up to 12 m
    Operating voltage 3 V
    Power component Battery CR2450
    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. Receiver is required (Wi-Fi device, supporting sensor adding function)
    Overall dimensions 45×45×29 mm
    Weight 22 g

    Content of delivery

    Motion sensor RS-3205 1 pc
    Battery CR2450 1 pc
    3M tape 1 pc
    Pin 1 pc
    Manual 1 pc
    Warranty card 1 pc