*With CH1, CH2, CH3 three working channels , and each channel can be set air volume , the temperature . *Password protection and key lock function . *Easy real-time operation , with magnetic switch control handle is placed in the handle shelves immediately into hibernation . * With automatic sleep function , in a dormant state parameters can be set . *Sensor closed loop, microcomputer zero trigger temperature control, power, heating quickly , easily and precisely adjust the temperature stable , free from the influence of wind .