The 3D Touch is a sensor for automatic bed leveling. The advantage of this sensor is that it retracts automatically after use so that it does not get in the way during 3D printing. The sensor is compatible with the BLTouch and has the same effect.
The 3D Touch has a repeat deviation of 0.005mm and is very accurate. Connection requires a servo output (PWM output) and an endstop input. The sensor comes with extra connectors to extend the cables.
NOTE: The 3D Touch is not a plug-and-play sensor for your 3D printer. Hardware and firmware modifications are required. Custom firmware is required for the Anet A6 printers. The Marlin firmware provides support for this sensor.