Daylight readable monitor (CE42SR2, CE52SR2) In addition to Weather proof monitor, it has adaptive brightness in accordance with prevailing light conditions. - EXTENSIVE INPUT & OUTPUT TERMINALS (for all products) This monitor set has various input and output terminals including component (Y,Pb,Pr) or RGBHV input and output with 5-BNC, composite video input and output with BNC, and RS-232 control port (serial D-Sub 9) input and output which offer the daisy chain connection. There are computer inputs (a D-Sub 15 RGB terminal) and DVI-D input with HDCP for High definition signals. There are also jacks for external speakers.