LED Rigid Panel---PL-RM3528CW27V12.Used 3528 CW LED chip on the aluminum materials PCB board.

There are three sizes:

27*27cm, 81 pcs SMD3528 cool white LED, DC12V.
27*9cm, 27 pcs SMD3528 cool white LED, DC12V.
9*9cm, 9 pcs SMD3528 cool white LED, DC12V.    
It's used indoor,so the PCB is IP20.