STEP 1: How much weight do you want to push?

第1步：你需要多少推力的開窗器？

STEP 2: Where will you install electric actuators ?
第2步：你將在哪里安裝電動開窗器？

STEP 3: Which type of windows are you going to install electric window openers ?

第3步：你打算安裝哪種窗戶？

STEP 4: Select controller for your electric window opener.

第4步：為電動開窗器選擇控制器。