The diagram below shows the specific parts of the sensor. 

Read further to explore the functionality of each part of the sensor.

  1. Sensor End Connector/Jack Plug
  2. On/Off Switch
  3. USB Port
  4. Status Indicator
  5. Unique ID Number

Sensor End Connector/Jack Plug (1)

Most Smart Wireless Sensors feature an end cap that is specific to the requirements of the device's internal sensor. The sensor's end cap is the direct interface between the device’s internal sensor and your experiment. The jack plug illustrated above provides the connection for the skin sensor and the electrode.

On/Off Switch (2)

The sensor's on/off switch allows you to turn the sensor on, off or perform a hard reset.

To switch the sensor off

  • Press and hold down the On/Off switch until the white light shows, then release.
  • If not communicating with the EasySense app, the sensor will turn off after a period of one hour of inactivity. 

Hard resetting the sensor

  • If necessary, attach the sensor to power.
  • Press and hold down the On/Off button for at least 8 seconds until the status LED gives a flash of blue light, then release.
  • If the sensor fails to respond, contact Product Support at Data Harvest. Please provide details of:  
    • The computer platform it is being used with and the EasySense app’s version number.
    • A description of the problem being encountered. 

USB Port (3)

Use to connect to a computer or a charging unit.

For specific USB or Bluetooth connectivity instructions, please see the 'Connectivity' section of this documentation. 

For instructions on charging your device, see the section on 'Charging the Sensor'. 

The Status Indicators (4)

The sensor features a single status indicator that changes colour and flashes. See the table below for further information.

Status Light


No light

Sensor is Off. Short press the On/Off switch

Blue flashing

Sensor is On and Bluetooth advertising

White flashing

Charging via USB mains charger or USB port,

Sensor is On and Bluetooth advertising

Red, Green, Blue Flashing

Charging via USB mains charger or USB port,

Sensor is Off

Green flashing

Communication with the EasySense app (via USB or Bluetooth) has been established

Solid Green

Fully charged

Orange flashing

Recording data

Red flashing

Battery is low

Unique ID Number (5)

All Smart Wireless Sensors are labelled with a unique ID number. This number is used in the EasySense app, so that you can identify each sensor when making a connection wirelessly.

Skin Electrode Pack (Included)

These electrodes provide the interface between the skin and the sensor. They are designed to give direct contact and measure using DC stimulus. The are designed to permit measurement changes but also facilitate enough freedom to avoid sweat build up.    

The electrodes are contained within elastic straps for use with the fingers. Clips are provided to facilitate a connection to the jack plug which, in turn, connects to the Sensor End Connector/Jack Plug (as above).