SDT-7 air duct type enthalpy transmitter apply in dryness course and air-line. to sensing the ambient dew point temp.when in use .the core of transmitter is PFHT05 sense organ .making use of patent technology of CMOSens®, ensure that the product with extreme reliability and stability for long term. The sensor include one hygrometric sense organ of capacitive polymer, one thermometric organ made by use energy gap material. Meanwhile ,in the same IC, no-seam connection with 14 digital A/D converter and serial interface circuit .so, this product with the advantage of excellent quality ,super-quick response ,strong anti-interference