Press and hold the ON/OFF button for several seconds to turn unit on. The unit will illuminate BLUE then flash BLUE for a few seconds, then it will illuminate solid RED, this means it is on, but no cable is connected.
Once you connect cable the RED LED will flash quickly.
When the unit recognises cable it will arm itself in around 2 minutes, then it will flash RED slowly.
When the unit triggers it will illuminate BLUE for the duration of it saving data, around a minute. Then switch itself off.