The SJ9Z-JF10 is a 10-pole jumper accessory designed for use with IDEC SJ series DIN rail relay sockets. This jumper facilitates multi-pole relay configuration and interconnection within the SJ socket system. It is part of IDEC's comprehensive relay accessory line and must be purchased in quantities of 10. The jumper is compatible with standard SJ series sockets and enables flexible relay stacking and parallel connection configurations for industrial control applications.