Product review (5 stars): Great Switch. Good solution to an otherwise expensive wiring problem
November 2013
This wall switch works very well and I use it for a 3 light-bulb ceiling fixture.
The unit is very flexible in that it can be set to activate up to eight switches.
I even have this set up for one switch to activate three different receivers located at different locations in the house.
  The closest receiver is about 12 feet and the farthest is about 25 feet through three walls
Two of the three bulbs are the bright cork-screw type CFL bulbs and one is a standard 40-watt incandescent.
That 40-watt bulb makes the switch function just fine.
The reason the CFL-only bulbs do not work is that most CFL bulbs use a rather small trickle of wattage to keep their circuits alive to enable the 'instant on' capability. People like this because it simulates the instant-on light from incandescent bulbs.
This small trickle of power flow fools the switch and causes the CFL bulbs to flicker.
Adding just one incandescent bulb acts as a sink for that small flow and blocks it enough to stop the flicker.
I successfully tried this switch in the downstairs family room with four 3-bulb fixtures:  a total of 11 CFL and one 40-watt incandescent bulbs.
This is a great product and i recommend it.
The battery was dead upon arrival. It's a smallish 12v battery like the ones used for garage door remotes, alarm sensors, etc. A Common battery but a bit costly...