Ag associates supplies latest pid controllers. It is used for the measurement, indication, retransmission and communication of temperature, pressure, flow, level and humidity. The pid controller can function with multiple thermocouples, rtds, linear voltages/currents/resistors and two-wire transmitter specification. It also directs its own scale, decimal point position, display resolution, digital filter and input shift. There are several exclusive features of the device like digital adjustment, digital filtering and cold junction auto compensation functions for thermocouple. The artificial intelligence control technology based controllers combines pid control, self-learning and fuzzy control technologies to enable auto tuning and self-learning and high precision control without overshoot or under shoot. Burnt proof motorola moc series ic is used to manufacture the controllers, which enables it to trigger thyristor. The linear power output using aijk3 intelligent three-phase shifting trigger abd k5 single phase shifting trigger module apply intelligent phase adjustment technology to the instruments output proportional to the power of the executor and improves the control precision. The modularized power auto isolation technology isolates signal groups of communication, current output and on off signal input. Latest dc/dc converter along with photoelectric isolation technology isolates multiple input-output signals. The device has a wide range of application in packaging machinery, blow mould and injection moulding machines, scientific and laboratory equipment, furnace manufacturers, etc.