The code 1SVR440839R4400 refers to the CL-LDD.K logic relay module from ABB. Here are some key details:

Display: Features a backlit graphic display with a resolution of 132x64 pixels.

Keypad: Includes an integrated keypad for user interaction.

Application: Designed as an accessory for ABB's CL range of logic modules, suitable for small to medium control tasks.

Mounting: Compatible with DIN rail mounting.

Usage: Ideal for applications in control systems, timing functions, and standalone control modules.