The PHOENIX CONTACT part 2702636 is an active termination resistor designed for use in PROFIBUS and RS-485 bus systems. It features a redundant power supply and allows for routing of the supply voltage via a DIN rail connector, offering convenience and ease of installation. With its integrated programming interface, the termination resistor provides electrical isolation for enhanced performance and protection. Additionally, it is switchable, allowing users to easily enable or disable termination as needed. The part 2702636 offers a reliable and efficient solution for bus system applications, ensuring optimal signal transmission and minimizing potential interference.