MPR121 touch module can read up to 12 channels of touch. 8 channels can also be used to control LEDs.
The module works via I2C and operates at a voltage between 2.5 and 3.6VDC.
Operating Voltage: 2.5 and 3.6V DC
Low-supply voltage mode (1.71-2.75VDC) activated by removing the 0.1uf capacitor between VREG and ground.
Size: 3 x 2cm (approx)