I ordered 2x2 LED panel lights. These lights initially seemed great but after a year the lights began to blink. The cause of this was faulty drivers which seemed to overheat and the internal overload protection would repeatedly switch from overload to on at a period of about 3 seconds. I contacted DHgate several times and on one occasion they sent me several replacement drivers. These drivers worked but these produced a noticeably lower light output. DHgate then failed to respond to additional request for technical assistance. I found some drivers on Amazon which worked but lacked a compatible plug and had to be modified at additional expense. The light output when operating properly was great but reliability is zero.