Item Type: Remote Control Material: ABS Model: AXD7536 Battery: AAA x 2 (Not Included) Compatible Models: for VSX 423 K AXD7517 AXD7621 AXD7536 AXD7501 Package List 1 x Remote Control 1High Compatibility: AXD7536 remote control for Pioneer VSX 423K AXD7517 AXD7621 AXD7536 AXD7501 AV Receiver. 2Infrared Technology: Remote control replacement adopts infrared technology with faster response speed and accurate key function control. 3Easy to Access: The remote control easy and full access to all buttons. Install 2 x AAA batteries and it will work normally. (without battery) 4New Replacement: When your original remote control needs to be replaced, this replacement remote control is the ideal choice. 5Environmentally Friendly Material: The shell of the AV receiver remote control replacement is made of ABS plastic, which is safe to use and has a long service life.