The E5EC-QX4DBM-008: It operates on 24VAC/DC, communicates over RS-485, and is IP66-rated on the front face for washdown environments.
Compared to the E5EC-CX4D5M-004, the QX4DBM drops the analog output and event input in favor of a dedicated voltage (SSR) pulse output and heater fault detection—meaning it is purpose-built for SSR-driven loads rather than 4-20 mA secondary control. The termination style differs: spring terminal on this model versus screw terminal on the -004; panel cutout (92 x 45 mm) and IP66 rating are identical, so physical retrofit is possible if you re-terminate the wiring.
Panel cutout is rectangular 92.00 mm x 45.00 mm, standard for E5EC family. Operating range -10°C to 55°C covers most cabinet environments. The tri-color LCD shows four rows of four characters each (0.710", 0.433", 0.307" heights).