What do the “TL” light colors mean on my Sapphire microphone?

“TL” button indicator lights:

No Light: Power is OFF

Solid Blue: Power is ON; 50-100% of battery life

Solid Purple: 25-50% of battery life

Solid Red when using: 0-25% battery life

Blinking Blue: Mic is muted

Solid Red when charging: Charging in progress

Solid Green when charging: Battery is fully charged

Blinking Red: Battery needs to be replaced

Yellow: Mic has entered “test mode”; need to remove battery and reconnect it