... SMT surface paste mounting, switch power supply, dual-channel PID auto-tuning algorithm, electromagnetism compatible design, etc.>>Features Adopting ... convenient.Adopt SMT technology, switch power supply, dual-channel PID auto-tuning algorithm, electromagnetism compatible design with the combination ... typeON-OFF,time proportional,on-off PID,dual-channel(heating/cooling) on-off PID.Range of the ...