RS-232 (5V signals),
black, DB9 Female, 3 m
(9.8 ft), coiled, 5V external
power with option for
host power on pin 9.The Benefits of Choosing a RS232 Serial Cable with External Power Supply for a Honeywell 1900 Barcode Scanner are as Follows:

1. Stable Power Supply: A RS232 Serial Cable with External Power Supply can Provide a Stable Power Supply through an External Power Source, Reducing the Impact of Power Fluctuations or Distortion on the Device. This can Help Ensure the Performance and Stability of the Barcode Scanner during Long-term Use.

2. Longer Battery Life: Using an External Power Supply can Reduce the Use of the Barcode Scanner's Battery, Prolonging the Battery Life and also Avoiding Device Crashes or Stoppages Caused by Battery Depletion during Use.

3. Higher Work Efficiency: Using an External Power Supply can Avoid Frequent Battery Replacement or Charging during Use, Thereby Improving the Efficiency and Convenience of Device Usage.

4. Wider Application Scenarios: Choosing a RS232 Serial Cable with External Power Supply can Expand the Application Scenarios of the Device, Making it Suitable for More Occasions that Require Long-term Work, Such as Warehouse Management, Production Line Barcode Scanning, etc.