Model EX serial units offer low-cost, time saving solutions to your control system problems. Depending on the serial unit, control up to 32 solenoid valves and receive up to 32 inputs. Diagnostic and trouble shooting capabilities greatly reduce downtime. Compatible valve manifolds include (N)VFS/S, (N)VZS, VQ, VQC, SX, SY, SQ, SZ, SV and ISO.