This cable connects the solenoid valve to the Farmduino. For Genesis v1.3 kits, a 3m long cable is used. For Genesis and Genesis XL v1.4 kits, a 0.6m long cable is used. For Genesis v1.5, a 0.5m cable is used. For Genesis v1.6 kits shipped  July 2022 and later, and v1.7 kits, the cable is 0.5m long and features a slimmer connector.