This is standard bid language, indicating that the district reserves the right to request a sample product—such as physical devices like phones—prior to making a final decision.
For example, if a vendor proposes Brand X in multiple variations (Model 1, 2, 3, and 4) to align with the four phone model levels specified in the bid, the district may request one unit of each as a sample for evaluation.
Typically, the district reviews white sheets and specification documents for technology hardware instead of physical samples. However, it retains the right to request physical samples if deemed necessary.