This module can be purchased on Xinabox CC.
The SH01 makes use of the CAP1296 produced by Microchip. The CAP1296 is a low power multichannel capactivie touch sensor controller.
The SH01 ☒CHIP is housed in an extremely compact 2U×2U ☒CHIP with four connection ports.
More information on the CAP1296 can be found in the datasheet.