FSI FAWN, USI, Wittern & Vendnet Slave 3503, 3505, 3506 Drink Machine Drop Sensor Cable & Light Bulb Power (Part#4214954). This 7ft. cable installs from drink slave machine to snack machine. The cable is a 4 hole white connection each end for drop sensor and 2 hole connection to power light bulb (some units do not need 2 hole connection for lights). These slave cables tend to wear out over time and do not allow communication to the slave drink machine. Often times when selecting drink it will take your money and not vend drink. This cable is brand new from factory.

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