The QT320 charge-transfer ("QT'") touch sensor chip is a self-contained digital IC capable of detecting near-proximity or touch on two sensing channels. It will project sense fields through almost any dielectric, like glass, plastic, stone, ceramic, and most kinds of wood. It can also turn small metal-bearing objects into intrinsic sensors, making them respond to proximity or touch. This capability coupled with its ability to self calibrate continuously can lead to entirely new product concepts. It is designed specifically for human interfaces, like control panels, appliances, security systems, lighting controls, or anywhere a mechanical switch or button may be found; it may also be used for some material sensing and control applications provided that the presence duration of objects does not exceed the recalibration time-out interval. The IC requires only a common inexpensive capacitor per channel in order to function. Power consumption and speed can be traded off depending on the application; drain can be as low as 60A, allowing operation from batteries.