STT 648 Smart HART temperature transmitter isolation module 1.Output signal:4-20mA 2.All input 3.All isolation STT 648 Smart HART temperature transmitter isolation module1. SummarizeSTT648 HART temperature transmitter module is specialize used for high capability HART temperature transmitter. It supports PT50, PT100, PT 1000 RTD and E,J,B,K,N,R,S,T Thermocouple, also support mA signal and ...