The CR-M230AC4L: The 4PDT contact arrangement gives you four independent switching channels, each with a normally-open and normally-closed set. That's enough to handle a mix of pilot lights, contactor coils, and PLC inputs from a single relay base.
The socket's screw terminals accept up to 2.5 mm² wire — strip 8 mm and torque to 0.5 Nm. Keep the coil suppression diode or RC snubber on the socket if you're driving the coil from a PLC output; inductive kickback from the 230 VAC coil can couple noise back into the control wiring.