WTC6212ML Twelve-channel low-power touch sensor key chipSpecification （V1.6）WTC6212ML series touch sensing IC is a special integrated circuit designed for the touch-sensitive keypad of the safe box, security door and other electronic password lock. It can replace the mechanical light touch key to realize waterproof and dustproof, seal isolation, with strong and artistic operation interface. A WTC6212ML can achieve 4 to 12 independent keys. The user can use it flexibly according to the needs.