Depending on the scanner model, the location of the indicator is different. Most of the scanner indicators have several meanings.
1. Scanner powered on:
When the scanner is powered on and started, the indicator light will light up and remain in a long light state.
2. charging state:
During the charging state, the blue light is accompanied by a red light and you will see a little bit of red light in the blue light.
3. pairing mode:
Scan specific code on the manual to make the scanner enter pairing mode, and then the blue light will flash rapidly. After the pairing is successful, the blue light came back on.