The ZSSC3xxx Replacement Board is included in IDT's modular SSC Evaluation Kits for select resistive ZSSC3xxx sensor signal conditioner (SSC) ICs. (Note: this board is not applicable to some ZSSC3xxx kits.) It simulates a variable sensor signal for the Evaluation Kit via two on-board potentiometers. Its internal resistance is 2kOhm. It is an option that can be used for a dry-run or demonstration calibration while the user's sensor is in development. It can be ordered separately.