IQS211x ProxSense® ICs Azoteq IQS211x ProxSense® ICs are single-channel capacitive proximity/touch controllers with movement detection. These self-capacitance controllers are designed for applications where an awake/activate on proximity/touch function is required. The IQS211x ICs use movement detection for applications that require long-term detection. These devices operate standalone or by I2C control and can be configured via OTP (One Time Programmable) bits.