Superior Sensor Technology EK04 Evaluation Kits are for use with the Superior HV series and include kits that work with the SPI or I2C interface. The EK04-HV-SPI kit works with the SPI interface, while the EK04-HV-I2C kit is designed for use with the I2C interface. Superior Sensor Technology EK04 Evaluation Kits include one each of HV110, HV120, HV160, and HV210 parts.