Epson PS-500 Series User Manual page 26

How to stop and resume heart rate measurement
1
Manual Operation.
1 To stop measuring your heart rate, press the [A] button.
2 Confirm to stop heart rate measurement by pressing the [A] Button.
Note:
If the [A] Button was pressed accidentally it will return back to the time screen after 10 seconds. You can
also hold the [B] Button to return to the previous screen.
2
Automatically stop heart rate measurement
If you remove the PS-500 and no movement is detected the device will automatically enter the sleep mode.
How to use  26