WH2202 is an external temperature and humidity sensor, which is small in size and can be fixed outside the shell for environmental monitoring. Suitable for temperature and humidity control in air conditioning, refrigeration and other fields. The power supply mode of WH2202 is 12-24V DC.
WT2202 is a built-in temperature and humidity sensor, which is directly installed in equipment for temperature and humidity monitoring. It is suitable for temperature and humidity control in electronic products, industrial automation equipment, medical equipment and other fields. The power supply mode of WT2202 is 3.3V DC.
Therefore, the usage scenarios of the two sensors are different. If it is necessary to monitor the temperature and humidity outside the casing, WH2202 can be selected; If you need to monitor the temperature and humidity inside the equipment, you can choose WT2202.