The Milwaukee 14-20-0107 Electronics Assembly For 1/4" & 3/8" RCH manages electrical functions in compatible RCH equipment. This replacement assembly contains electronic components that regulate electrical signals, allowing the tool’s controls and connected functions to operate as intended. Proper operation supports consistent electrical performance and communication between system co... https://www.wholetoolbox.com/milwaukee-14-20-0107-electronics-assembly-for-1-4-3-8-rch/14-20-0107.html