3. The temperature and low fan speed control zone is configured by one key, flexible control, set a wide range, set the program after saving. 2. Independent dual temperature control, which in turn displays the temperature of the two channels (-12℃ to 79℃, error less than 1℃) 4. You can set the switch stop alarm function (external AC buzzer, default shutdown). 1. Wide operating voltage range of DC 8-60V (here refers to the control panel can work in this voltage range, the actual operation of the controller power and fan are together, must be in accordance with the fan power requirements, otherwise it will damage the fan). Operating voltage: DC8-60V (must be equal to the fan voltage, if you use 12V fan, 24V will burn fan); Operating current: Control panel operating current 35mA (12V) 22mA (24V); Control capacity: there is no fan current limit, but the current of the pin interface fan board should not be higher than 3A, use a current fan. Connect the fan power cable directly main power supply!, Weight: 0.0881849048 Pounds, Manufacturer: Rtxbvg