CLICK Basic PLC, 24 VDC required, serial ports, Discrete Input: 8-point, DC, Discrete Output: 6-point, relay.

8 DC Inputs/6 Relay Outputs
CLICK PLC CPU, 8 DC input/6 Relay output, 8K steps total program memory,
Ladder Logic programming, built-in RS232C programming port and
additional RS232C Modbus RTU/ASCII communications port (configurable
up to 115200 baud). Inputs: 8-pts 24 VDC Sink/Source inputs, 2 commons,
isolated. Outputs: 6-pts 6-240 VAC/6-27 VDC Form A (SPST) relays, 1 A/pt,
2 commons, isolated. Removable terminal block .