... ,memory, leak current detection, water level detection&display(two colour LED) function etc. a. Apply 8 bit microcomputer of NEC or ... . The precision of temperature control <=1°C c. The display is the double 7segments LEDs or LED module or LCD(backlight) d. It can ... ,memory, leak current detection, water level detection&display(two colour LED) function etc. h. It has leak current, no water, overflow ...