1.ISO9001,CE,RoHS 2popular SOLAR SYSTEM TEMPERATURE CONTROL 3.PID, ON/OFF 4.Alarm, RS485/232 5 ... AI-708 High Performance Temperature Controller-popular SOLAR SYSTEM TEMPERATURE CONTROL...Ideal for accurate controls of temperature, pressure, flow, level ... and CE,RoHS certified, complying with EMC requirementSpecification: Control modeOn-off control mode (deadband adjustable)AI MPT with auto tuning, ...