E4 Led Guide (FW 3.0.1.6612 and higher)

Updated:

Please be aware that this LED guide is only relevant to FW 3.0.1.66.12 and higher. You may reference this guide for FW 2.1.0.4911.

 

The E4 comes equipped with a single button to support interactions. You can trigger different E4 actions depending on the duration of the button press.
button interaction notes

  • Short press: A short press is a quick click on the button (similar to clicking on a keyboard, trackpad or mouse button).
  • Standard Press: A standard press can be triggered by holding down the button between about one and three seconds.
  • Long Press: A long press can be triggered by holding down the button for more than five seconds.

When the E4 is powered off and disconnected from USB

  • Short press - From the OFF state a short press will not result in any output from the E4.
  • Standard press - Power on the E4. Press and hold the button until you see a light blue LED switch on indicating that the E4 has entered Standby Mode. As soon as you see the light you can release the button.  The blinking blue status LED will pulse while the device is in standby mode. While the E4 is in standby mode you can connect it to a mobile device to enter Streaming Mode (indicated by a steady blue LED light) or wait for ~60 seconds for the device to enter Recording Mode (indicated by a steady red LED light).

When the E4 is powered on in Recording Mode

  • During start-up - as the E4 enters recording mode a steady red LED will appear, and then turn off after some time to save battery. 
  • Short Press - create and event mark. The red LED will come on for 1 second indicating the Event Mark has been recorded.
  • Standard Press - You can turn off the E4 with a standard press. As soon as you press the button the led turns on and then off after a second. As soon as the led is off you can release the button. The E4 now turned off.
  • Long Press - device reset. A successful "Reset" is indicated solid white light. NOTE: After a reset the device may need to be connected to USB to re-activate it.

When the E4 is powered on in Streaming Mode

  • During start-up - A steady blue light indicates that a streaming connection has been established. After about 20 seconds, this light will later disappear to save battery life.
  • Short Press - create and event mark. The blue LED will come on for 3 seconds indicating the Event Mark has been recorded.
  • Standard Press - You can turn off the E4 with a standard press. As soon as you click the button the led turns on and then off after a second. As soon as the led is off you can release the button. The E4 should now be powered down.
  • Long Press - device reset. A successful "Reset" is indicated solid white light.  NOTE: After a reset the device may need to be connected to USB to re-activate it.

When you power on the E4, make sure that the E4 starts in Standby Mode flashing light blue, which means that it is ready for use.


Error states are indicated by the following color combinations:

  • Flashing red indicates that the E4's memory is full or the clock is unset preventing you from operating the device in Memory Mode. You can still connect to the E4 from the E4 realtime app on your smartphone/tablet.
  • Flashing yellow LED lights indicate that the E4 has a low battery and should be charged soon.

USB Connections

  • Connecting E4 to E4 manager via the USB charging cradle - the device enters Standby Mode (alternating yellow and blue LED); if there is data in memory the data transfer will commence indicated by alternating yellow and purple LED lights.
  • Charging the E4 - the E4 can be charged by most powered USB connections (5V). When connected to E4 Manager, an alternating yellow and blue light indicates that the E4 is charging.
  • Memory erase after uploading data - flashing light blue LED. Once you’ve uploaded all the sessions from the E4 wristband through E4 manager, the device will flash light blue indicating the memory is in the clearing process. It takes up to 2 minutes to clear all the data if E4's internal memory was full and the light blue LED will disappear as soon as the E4 is disconnected from the USB port.
  • Memory erase in progress, E4 charging - flashing light blue and yellow LED. The yellow LED will stop flashing as soon as E4 is fully charged, . The light blue LED will disappear as soon as the E4 is disconnected from the USB port.
  • Session download in progress - alternating yellow and purple LED.
  • Firmware upgrade in progress - alternating yellow and purple LED. Please note that while upgrading firmware, E4 wristband is not uploading data to the E4 connect. As soon as the firmware upgrade is completed, E4 will power down. Please turn the E4 wristband on to start session download.

If you haven't found the answer to your question, click the button below and complete the typeform. We will receive all the information needed to assist you further.

Have more questions?