The logger is switched off when you get it
Loggers have a raised power button on the front.
To start the Logger, press and hold the Power Button for approximately 5 seconds until the IN USE light comes on. Release the Power button.
To check that the Logger is running, keep watching the IN USE light. It will flash briefly every 10 seconds when the Logger is recording. It can be quite hard to see unless you are looking at the Logger straight on.
Switching the Logger off
If you need to switch the Logger off (for instance, if you are not going to be using it for a while), press and hold the Power button for 5 seconds. The IN USE light will flash 5 times to indicate the Logger is shutting down.