TT481WH 4 or 8 Channels Temperature Transmitter with Wireless HART® Imagine all the advanced features of Smar temperature transmitters, but now with wireless technology. The TT481WH (WirelessHART®) has the same features as the series TT400 Series, but following the standard of HART Communication Foundation for wireless transmitters. It is an excellent and cost-effective solution for 4-20mA equipment integration with WirelessHART®. Read more