DEMO Function: To press the DEMO key, the car could operate a series of the functions automatically to exit this function through pressing any key. To press the key again to operate with sound. Mute Function : press the Mute Switch Key on remote controller, the excavator could operate without sound. Horn Button: after starting the car, press the Horn button on remote controller to emit a brilliance horn sound. These functions could be multiple used for simulating operation. Left/Right Rotation: press the key of “Left(or Right) Rotation”, excavator will do a motion of left(or right) rotation, with a reminded sound of “Di- Di”, the lamps of back also light up(Fig 4E). Unloading: press the key of “Unloading” after starting the car, excavator will do a motion of unloading with sound.(Fig 4D). Excavating: press the key of “Excavating” after starting the car, the car will do a motion of excavating with sound.(Fig 4D). The lights on left would be flashed when turn left, the same of right lights when turn right. Turn Left/Right: To push the Left Trigger forward/backward, and Right Trigger turns left/right, the truck would turn left/right. Forward/backward: To push the Left Trigger ahead/ back, the truck would go forward/backward when forward, the lights on front and back would be lighted on backward, the lights would be flashed (turn off when in a mute station) (Fig 4B). 
Notice: First charging requires 8 hours, future USB charge line requires 4 to 5 hours. 8V AA rechargeable battery as the correct polarity, and then screw the cover.
Open the cover under the truck by screwdriver, inserts 1pc of 4.5V AA batteries and then screws the cover. Open the battery cover of remote controller as the Fig 2A showed, inserts 2pcs of 1.
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