SP-RS485-12V-O: ENVIROMUX weather resistant surge protector for RS485 control and 12VDC power lines 

protects sensors running on 22 AWG 2-wire sensor cables or 12VDC power lines against the effects of electrostatic discharge, faulty wiring and lightning 

Ideal for applications such as video surveillance cameras and access control.

• Screw terminal pairs for RS485 and 12VDC power lines protection
• Will also protect two single ended data, analog or control lines
• Impact and weather resistant enclosure with locking hinged cover