Very good solid construction with toroidal transformer at an excellent price. All the bad reviews seem to be not understanding how to use it. Most important 1. The photo sensor must NOT be cut and the wires shorted 2. Photo sensor must be see some ambient light 3. The photo sensor trigger sensitivity is adjusted with the 4th long press of the leftmost function button, followed by the up/down button. Once you do these 3 steps, the unit turns on at the ambient light level set in step 3. By combining this with an outdoor Wi-Fi switch, you can control it with your phone app and program on/off schedules.
Bill Barvinek 
Jay Tabola 
