Replacement Remote Control for Pioneer VSX-521 VSX-521-K VSX-1024 VSX-1024-K VSX-1020 VSX-1020-K Home Theater Receiver AV Receiver. No need program. It will work perfectly right out of the box. ABS matteries. Batteries needed: 2x 1.5V AAA batteries. Package included: 1x remote control ( batteries and manual are not included). Replacement Remote Control for Pioneer VSX-521 VSX-521-K VSX-1024 VSX-1024-K VSX-1020 VSX-1020-K Home Theater Receiver AV Receiver