Available. The Leuze DDLS 538 40.4 L H S3 is a high-performance optical data transmission system designed for industrial applications requiring reliable and long-distance data communication. Operating within the DDLS 500 series, this device offers a working range from 100 to 40,000 mm, utilizing an infrared laser light source for precise data transmission. It features a transmission frequency of F4 and a narrow opening angle of 1°, ensuring focused and accurate data transfer. The system operates on a supply voltage of 18 to 30 V DC and includes one digital switching input and one digital switching output for versatile integration. Connectivity is facilitated through EtherCAT with a link-down time of 70 ms and supports EtherCAT Safety-over-EtherCAT (FSoE) with CIPsafety protocol, enhancing its suitability for safety-critical applications. The device is housed in a metal enclosure measuring 100 mm in width, 156 mm in height, and 99.5 mm in length, with a net weight of 1,255 g. It is designed to operate in ambient temperatures ranging from -35 to 50 °C and is protected against dust and water ingress with an IP 65 rating. The DDLS 538 40.4 L H S3 is also equipped with an integrated laser alignment aid, ensuring precise installation and operation. This model is particularly effective in environments with reflective surfaces, as it is not influenced by such conditions, and supports the operation of parallel light axes, making it ideal for complex industrial setups requiring robust and accurate data transmission solutions.