Serial Port Relay Board Upgrade Kit
This kit will allow you to join two CK1610's together for a total of 6 inputs and 16 relay outputs. Kit includes two new front and rear panels, two new IC's, and wire to connect the CK1610's together.
Please note: This kit includes parts to connect two CK1610's together, you must purchase two CK1610's to us these parts. The CK1610 is listed here.
Serial Port Relay Board Upgrade Kit Reviews: