Based on this product's specifications, here are some alternatives and similar models
External sensor Immergas 3.014083 for boilers and heating systems
Summary description:
External sensor Immergas 3.014083 is a replacement sensor designed for use with Immergas boilers and heating systems. It detects outdoor temperature to enable weather-compensated control of boiler operation, improving regulation of heating curves and system responsiveness. Suitable for installation on exterior walls or in protective housings; used to optimize boiler efficiency and indoor comfort.