Key Highlights:

1. Operating System: All IQTouch model come with Android 13 and above. Windows system as option.
2. DisplayTechnology: The HA1100 features Optical Bonding, whereas the others use Zero Boarding.
3. Document Camera: Only the HA1100 specifies having a document camera.
4. Environment Detector: Only the QA1300 includes an environment detector with capabilities for measuring temperature, VOC, and PM2.5.
5. Proximity Sensor: The QA1300 has a proximity sensor, while the HA1100 and TB1300 do not.