SPD-HR25 is a 4-Pin Push-Power (compatible with Hirose 4-Pin) to 2.5mm Locking DC barrel jacks.
This Hirose 4-Pin port-compatible cable is capable of working with the following;
Lectrosonics SR-series receivers with DC bottom plates
Lectrosonics DCR822
Zaxcom QRX 200
Zaxcom QRX 100
While it can work with any 2.5mm Locking DC barrel jack device, note that this cable is unregulated and will output 9~18V. Do not use with 2.5mm Locking DC input devices that require regulated voltage.