... operation 0.3% FS. 2011--TH series Expert Digital Adjustor/Temperature Controller TH4 (48H*48W*80Lmm) & TH6(96H*48W*80Lmm) ... /30mA.6,Accuracy:0.3%.7,Standard RS232/RS485 communication interface,MODBUS RTU protocol.Can connect to other equipments/PC ... We can manufacture thousands of different models of products, including Temperature Controller, Digital Adjustor,thermocouple (TC and RTD), Panel Meter, ...