The humidity sensor module HSM 100 extends the functionality of STM 43xJ temperature sensor modules. HSM 100 contains an internal calibrated humidity sensor. It can be plugged onto STM 43xJ modules via a 20 pin connector. The sensor signal is read via the ADIO3 input of STM 43xJ. In order to be able to read the sensor signal STM 43xJ has to be configured to an EEP supporting humidity. This can be done via Dolphin Studio.