The 2071566-8 is a metal retaining clip for PCB socket, specifically designed for 29 mm height PT relay modules. This accessory provides a secure mechanical connection between the relay and the PCB socket, ensuring stable installation in densely packed circuit board layouts. The clip is manufactured by TE Connectivity as part of the Schramm Accessories line for Miniature PT relays and supports mounting in any direction. It is compatible with PT78C02 and PT78C04 PCB sockets and is commonly used in electrical control cabinets, power conversion systems, machine tools, and automatic production lines where reliable relay retention is essential.