1.ISO9001,CE,RoHS 2popular SOLAR SYSTEM TEMPERATURE CONTROL 3.PID, ON/OFF 4.Alarm, RS485/232 ... 1 PC AI-708 High Performance Temperature Controller-popular SOLAR SYSTEM TEMPERATURE CONTROL...Ideal for accurate controls of temperature, pressure, flow ... type, an additional type can be provided upon request.(Graduation index is needed)Input rangeThermocouple: K(-100~1300°C), S(0 ...