... transmitter. It supports PT50, PT100, PT 1000 RTD and E,J,B,K,N,R,S,T Thermocouple, also ... support mA signal and resistance signal, isolationvoltage is DC1000V.Before ... the STT648, pls read this use manaul carefully,and according to this manual to operate. If you ... contact with our company freely, we will reply and resolve the problem soonest!2. Hardware part2.1 Power ...