The diagram below shows the specific parts of the sensor. Read further to explore the functionality of each part of the sensor.

  1. Status Indicator
  2. On/Off & Position Reset Switch
  3. USB Port
  4. Unique ID Number
  5. Pulley/Mounting Wheel
  6. Rod Mounting Points
  7. Linear Rack

The Status Indicators (1)

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 EasySense2 app (via USB or Bluetooth) has been established

Solid Green

Fully charged

Orange flashing

Recording data

Red flashing

Battery is low

On/Off & Position Reset 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 EasySense2 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 EasySense2 app’s version number.
    • A description of the problem being encountered. 

Position Reset

  • During use a short press will reset the rotational position of the pulley wheel to either 0 or 180 degrees.

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'. 

Unique ID Number (4)

All Smart Wireless Sensors are labelled with a unique ID number. This number is used in the EasySense2 app, so that you can identify each sensor when making a connection wirelessly.

Pulley/Mounting Wheel (5)

Allows for connecting additional accessories such as a pendulum rod, wire or inertia plates.

Rod Mounting Points (6)

Multiple points which allows for attaching the included metal rod to a retort stand clamp.

Linear Rack (7)

This entry point allows for the use of a linear rack.