The reader has 2 buttons, and 3 LEDs along the top edge. 

Buttons

Press and hold the small round power button to switch the device on or off. 

At this time the button labelled scan is not used for any operation. 

LEDs

Power

• Solid Red - Device is charging
• Solid Green - Battery level above 20%
• Blue - Battery level below 20%
• Off - device is switched off

Note: Does not support PD charging.

Bluetooth

• Blue - Bluetooth is connected
• Off - No bluetooth connection

Work

• Flashing Blue - Reading transponders