ALLIMITY Vizio Sound Bar Replacement Remote D20/D51

The ALLIMITY D20 D51-H D510-H is a straightforward infrared replacement remote with a display designed to control compatible Vizio V-Series and M-Series sound bars.

This replacement remote provides the same input selections and basic controls found on original remotes for a range of Vizio 2.1, 4.1 and 5.1 / 5.1.2 sound bar systems. Built from durable plastic and operating over standard infrared, it requires no programming: insert fresh batteries, point at the unit's IR sensor, and use the display and buttons to switch inputs, adjust volume, or activate Bluetooth pairing.

Which Vizio sound bar models does this remote work with?

The ALLIMITY D20/D51-H/D510-H remote is built to match the IR codes and button layout of many Vizio V-Series and M-Series sound bars. It is checked for compatibility with the model numbers listed by the manufacturer, so it will typically replace lost or broken originals for those lines.

• Confirmed models include V51x-J6, V51-H6, M51ax-J6, V21-H8R and similar variants.
• Also compatible with M512a-H6, M215a-J6, M21d-H8R, P514-H6 and other listed IDs.
• If your exact model isn’t listed, contact the seller by email for help identifying the correct remote.

How do I get this replacement remote working quickly?

Set up is intentionally simple: this is an infrared remote without voice or network features, so no pairing or programming is required. Just open the battery compartment, install fresh batteries, and make sure there are no obstacles between the remote and the sound bar's IR sensor.

• Insert fresh batteries before first use (batteries not included).
• Aim the remote at the sound bar’s IR receiver and keep a clear line of sight.
• Check the display for feedback when pressing keys to confirm the unit receives commands.

What functions and inputs are available on this remote?

The remote mirrors common sound bar controls and input selectors so you can switch sources, control volume, and toggle modes. It includes labeled input buttons and media controls so you can operate TV audio, HDMI, optical, Bluetooth and USB sources without returning to the sound bar.

• Input keys: AUX, AUX VA, OPTICAL, HDMI IN, HDMI eARC, BLUETOOTH, USB.
• Standard controls for volume, mute, play/pause and navigation.
• Compact display shows input selection and command feedback.

What should I do if the remote doesn’t control my sound bar?

Because this is a replacement IR remote, common issues are battery or line-of-sight related. If standard troubleshooting doesn’t help, contact customer service for targeted advice or to confirm model compatibility before requesting a replacement.

• Verify batteries are installed correctly and are fresh.
• Remove obstacles and test within a few meters of the sound bar.
• Contact seller support if the remote still fails to operate; include your sound bar model number.

Who is this for? This ALLIMITY replacement remote suits Vizio owners who lost or damaged their original IR controller and want a no-frills, plug-and-play replacement with a display. It's ideal for households that prefer physical buttons and direct input selection over voice or app-based controls, and for installers restoring basic operation to V-Series and M-Series sound bar systems.