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GC661B MULTI CHANNEL WALL SWITCH
The faceplate can be removed easily by holding the module firmly in one hand at the
left and right edges and push on the faceplate below the display screen with two
fingers of your other hand. Fig.1 below shows how the batteries must be inserted.
Fig.1
Close the battery tray and replace the faceplate, you will find the pushbuttons clearly
marked. See Fig.2 below.
Fig.2
