This part is a kind of semiconductor called UNL2004.
Function of this product has (UNL2003 / UNL2004) High Voltage / High Current Darlington Arrays.
Manufacturers : First Components
Image and pinout :

Some of the text within the PDF file :
w w a D . w S a t e e h U 4 t m o .c w w .D w t a S a e h U 4 t e .c m o w w w .D a t a e h S 4 t e U m o .c [ ... ]
UNL2004 PDF Datasheet Download
