Flexible power management, Granit xp 1990i and 1991i, Environment. see – Honeywell Granit 1991iSR Ultra-Rugged Standard-Range Barcode Scanner User Manual
Page 73: Flexible power, Management

Granit XP User Guide
57
Flexible Power Management
If you are experiencing network performance issues, and suspect the scanner is
interfering with other devices, you can turn down the power output of the scanner.
This reduces the range between the scanner and a base or an Access Point as
shown in the following illustration:
Granit XP 1990i and 1991i
Scan one of the barcodes below to set the scanner’s power output to
Full Power
(100%),
Medium Power
(35%),
Medium Low Power
(5%), or
Low Power
(1%).
Default = Full Power.
For Bluetooth Class 1 operation, use Full Power.
For Bluetooth Class 2 operation, use Medium Power or lower.
For BLE operation, use Medium Power.
802.11
LAN
Reduced
Power
Scanner
Full
Power
* Full Power
Medium Power
Medium Low Power
Low Power