Logo! 1224RCEO, Logic Module, SVEA: 12DC 24V Relay, DE 4AE4 DA, without display, memory for 400 blocks, modularly expandable, Ethernet, integrated web server, data logging, custom web pages, standard microSD card for Logo! Soft Comfort from V8.4, compatible with older projects, cloud connectivity, MQTT in all Logo! 8.4 basic units. The Logo! basic units with digital inputs and outputs and their compact installation width of 72 mm have many well-known functions integrated, such as pulse relays, stairwell automation, auxiliary relays, time relays, etc., which can be combined in various ways. Switching programs can be easily created and simulated on a PC. The integrated Ethernet interface allows communication with up to nine Logo! modules or SIMATIC S7 systems. With the also integrated web server, connected consumers can be monitored and controlled via WLAN or the Internet. The web pages can be designed by the user themselves, even without HTML knowledge. Additional modules enable GSM or GPS communication as well as integration into a KNX building management system. Logo! basic units are available with and without displays for various input voltages, as well as with transistor or relay outputs up to 10 rated current. Expandable with additional modules to up to 24DI, 20DQ, 8AI, 8AQ. Cloud communication is integrated. Logo! can also be expanded with an external text display for meaningful messages in plain text. The background color is selectable for visual highlights. Various Logo! power modules for power supply are also available.