1-Wire Humidity Module
The perfect companion for the TAI8515 Weather Instrument, the TAI8540D 1-Wire® Humidity Module can be installed on any existing 1-Wire® network. Based on the HIH-4000 humidity sensor, manufactured by Honeywell, and using the DS2438 IC from Dallas Semiconductors as a 1-Wire front end and a A/D converter, the TAI8540D not only permits to measure the relative humidity, but also the temperature.
The unit obtains the power it needs directly from the 1-Wire® network, without any need for an external power supply.
As with all 1-Wire® devices, it comes with a unique 64 bit address, so multiple units can be distinguished on complex networks.