The DS100 comes with the instrument and power supply module.
This unit connects to the scales load sensors and processes the signal for weight display and outputs to the DS100 Remote baggage display.
Airline baggage scales product literature:
https://doranscales.com/wp-content/uploads/2024/08/Doran_AirlineBaggageScales.pdf
DS100 Instrument Manual:
https://doranscales.com/wp-content/uploads/2021/06/MVP_techmanual.pdf