Four Channel RS232 Control Relay Board - 12V DC
Easily control four relays over RS232 with this Four Channel RS232 Control Relay Board from PMD Way.
Supply voltage of 12V DC is received via a 2.1mm DC socket on the relay board.
Each relay can handle 250V AC/10A or 30V DC 10A.
Board arrives fully-assembled, and full instructions are included.
Board measures 85 x 47 x 18mm.