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FDC1004: FDC1004 recognize finger and water

Part Number: FDC1004

Hi Team,

My customer want to do capacitance touch sensor in their smart lawn mower, 3 channel input is enough, could you please kindly help to check if FDC1004 is the most suitable device to recommend? 

And for FDC1004, if this device could recognize finger and water? Since for their application, if meet a raining day, the device must to tell the difference for finger and water. If our device support this function, could you please also kindly help to share some material which shows the theory about how to achieve such function. 

Thanks a lot for your team support.

Best regards

Jie