This is a separate part suitable for use with the Smart . This is a Parallel Interface Board suitable for . Minimum temperature Less than heating start temperature (can be set by the PC host), and there is a charger; then heating be turned on Minimum temperature Heating shutdown temperature (can be set by the PC host), turn off heating suitable for charging Judgment of abnormal status: heating is turned on suitable for 15 minutes, but the temperature does not rise by 2 degrees. Heating is abnormal. Exist heating . After 15 minutes, judge whether to turn on heating again. Heating is turned on suitable for 60 minutes, but the temperature does not rise by 5 degrees. Heating is abnormal. Exit heating. 15 Check again after a few minutes whether to turn on heating. Colour: Green Material: PCB+Components Package Contents: 1 x Parallel Interface Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.