Sealevel Systems Inc.

4201 SeaLINK+2/232: Ethernet to 2 Port RS-232

4202 SeaLINK+2/485: Ethernet to 2 Port RS-422/485

4203 SeaLINK+2: Ethernet to 2 Port RS-232/422/485

420E SeaI/O-420E Ethernet Modbus TCP to 16 Isolated Inputs / 8 Form C Relay Outputs

SeaI/O 420-INT with 16 Optically Isolated Inputs / 8 Form C Outputs

420M SeaI/O-420M RS-485 Modbus RTU Interface to 16 Isolated Inputs / 8 Form C Relay Outputs

420N SeaI/O-420N Expansion Module 16 Optically Isolated Input / 8 Form C Relay Output SeaI/O Expansion Module

420S SeaI/O-420S RS-232 Modbus RTU Interface to 16 Isolated Inputs / 8 Form C Relay Outputs

420U SeaI/O-420U USB to 16 Isolated Inputs / 8 Form C Relay Outputs

420W SeaI/O-420W Expansion Module Wi-Fi 802.11b/g Modbus TCP Interface to 16 Isolated Inputs / 8 Form C Relay Outputs