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 moduleSpecification:1. SummarizeSTT648 ... temperature transmitter. It supports PT50, PT100, PT 1000 RTD and E,J,B,K,N,R,S,T Thermocouple, also support mA signal ...