I can't get the back to open to install batteries?

I had the same problem so I used a knife blade point to gently separate the battery lid from the remote. Just used gentle pressure.

Will this work with vizio's model # s3851w-d4?

Yes, the remote works with all Vizio soundbars.

Will this work with sb3621n-e8m

Yes, it works with Vizio SB3621n-E8M soundbar.

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OEM Replacement Bluetooth Backlit Display Sound Bar Remote Controller for Vizio 2.1 5.1 Home Theater Sound Bar, Vizio Channel Soundbar System and Vizio M V P Series Home Audio Sound System

Product ID: 482066375

Details

Brand
ULTRA PARTS
Special features
Backlit
Colour
BLACK
Max number of supported devices
1
Compatible devices
Home Theater

💡Backlit digital display for night/day use

📶Bluetooth & Infrared dual connectivity

🔋Long-lasting alkaline battery power

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KD 9.37

Duties & taxes included

In stock

Sold byAmazon KUWAITDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎶 Elevate your sound control game—because your home theater deserves the best remote!

ALWAYS VISIBLE - Backlit LED display guarantees easy navigation whether it’s movie night or a late-night jam.
INSTANT PAIRING - Plug-and-play Bluetooth connection—no programming, no hassle, just pure sound control.
EFFORTLESS CONTROL - Over 20 customizable modes and levels to tailor your audio vibe perfectly.
PREMIUM DURABILITY - Crafted with high-quality materials to ensure your remote lasts as long as your binge sessions.
SEAMLESS COMPATIBILITY - Works flawlessly with Vizio 2.1 & 5.1 soundbars across M/V/P/S series—no guesswork needed.

This OEM replacement remote is designed exclusively for Vizio 2.1 and 5.1 home theater soundbars, featuring Bluetooth and infrared connectivity, a backlit digital display, and over 20 customizable audio modes. It offers plug-and-play ease with no programming required, powered by alkaline batteries (not included), and built with premium materials for durability and seamless compatibility across multiple Vizio series.

Specifications

ASIN	B0BBLG8JB7
Additional Features	Backlit, Digital Display
Battery Type	Alkaline
Best Sellers Rank	#100,001 in Electronics ( See Top 100 in Electronics ) #4,191 in Remote Controls
Brand	ULTRA PARTS
Button Quantity	25
Color	BLACK
Colour	BLACK
Compatible Devices	Home Theater, Vizio Soundbars
Compatible devices	Home Theater, Vizio Soundbars
Connectivity Technology	Infrared
Connectivity technology	Infrared
Controller Type	Button Control
Customer Reviews	4.7 out of 5 stars 320 Reviews
Item Dimensions L x W x H	114.3L x 53.3W x 4H centimeters
Item Type Name	Home Theater Sound Bar Remote Controller
Manufacturer	ULTRA PARTS
Max number of supported devices	1
Maximum Number of Supported Devices	1
Maximum Range	10 Miles
Mfr Part Number	D512-H
Model Name	Sound Bar Remote - ULTRA_D51-H_D21-H
Model Number	ULTRA_D51-H_D21-H-V1
Special features	Backlit, Digital Display
UPC	657477686925

Reviews

S**N

Works perfectly with Vizio "S4221w-C4 v2" 2.1 Soundbar

14.11.2025

L**H

Worked as intended.

8.10.2025

H**D

OEM is the best

29.12.2025

J**O

Better than original

23.10.2025

J**H

Worked great!

1.12.2025

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