Ecovacs extension cable for W1, W2, W2 Pro, Winbot, 1.5 m The 1.5-m extension cable is the perfect accessory for W2 & W1 PRO devices. Its lightweight design reduces the load on the machine. The threaded interface guarantees a stable and reliable connection that is particularly easy to handle. With a cable length of 1.5 m, the extension cable offers optimum versatility - ideal for a range of applications. Each pack contains an extension cable so you can get started right away.