Replaced a faulty 2 circuit switch in an existing lamp. Not suitable for "new construction" as the base is not included. That's actually "just courage". Our lamp has a small bulb on the base and a bulb under the shade. Position 1 - only the floor lamp is on, position 2 - only the ceiling lamp is on, position 3 - both bulbs are on, position 4 - both are off. Only a screwdriver is required for installation.
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