---
product_id: 71447528
title: "TWTADE 2Pcs 500K Ohm Single Linear Taper Dimmer Potentiometer with on/Off Switch + 2pcs Black Aluminum Alloy knob"
brand: "twtade"
price: "R426"
currency: ZAR
in_stock: true
reviews_count: 13
category: "Twtade"
url: https://www.desertcart.co.za/products/71447528-twtade-2pcs-500k-ohm-single-linear-taper-dimmer-potentiometer-on
store_origin: ZA
region: South Africa
---

# 500K Ohm precision resistance Single linear taper for smooth control Integrated on/off switch TWTADE 2Pcs 500K Ohm Single Linear Taper Dimmer Potentiometer with on/Off Switch + 2pcs Black Aluminum Alloy knob

**Brand:** twtade
**Price:** R426
**Availability:** ✅ In Stock

## Summary

> 🎛️ Elevate your control game with precision and style!

## Quick Answers

- **What is this?** TWTADE 2Pcs 500K Ohm Single Linear Taper Dimmer Potentiometer with on/Off Switch + 2pcs Black Aluminum Alloy knob by twtade
- **How much does it cost?** R426 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/71447528-twtade-2pcs-500k-ohm-single-linear-taper-dimmer-potentiometer-on)

## Best For

- twtade enthusiasts

## Why This Product

- Trusted twtade brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smooth Linear Taper:** Experience seamless dimming and volume adjustments without jumps or dead zones.
- • **Built-in On/Off Switch:** Convenient toggle functionality integrated for effortless power control.
- • **Durable Carbon Composition:** Robust carbon tech ensures long-lasting performance under heavy use.
- • **Premium Aluminum Alloy Knobs:** Sleek black knobs provide a professional finish and tactile grip for precise adjustments.
- • **Precision 500K Ohm Resistance:** Engineered for exact control and reliability in your audio or electronic projects.

## Overview

The TWTADE 2Pcs 500K Ohm Single Linear Taper Dimmer Potentiometer set features high-precision carbon composition resistors with a smooth linear taper and integrated on/off switches. Each unit comes with durable black aluminum alloy knobs, designed for reliable, long-term use in audio, lab, or industrial applications. Perfect for professionals seeking dependable, tactile control components with a sleek, modern aesthetic.

## Description

TWTADE 2Pcs 500K Ohm Single Linear Taper Dimmer Potentiometer with on/Off Switch + 2pcs Black Aluminum Alloy knob: desertcart.com: Industrial & Scientific

Review: A good purchase at a fair price shipped quickly - Shipped fast & works good for our application still after many months, so I call it good
Review: Sturdy 500k pot. - These are solid on/off 500k ohm potentiometers. Spec'ed right on the money using my multimeter. They're solid and have that higher quality "beefy" feeling. I needed them to repair a lab hotplate & magnetic stirrer. The original pot plastic disk that holds the knob axle & sweeps the varistor... just mashed & cracked. I have a lot more confidence in this one. The knob stem was standard, and I could use the original knob head to keep the cosmetic appearance the same. There's a nice zinc die-cast face to the potentiometer body that also has a raised standoff and anti-rotation tab if the panel surface or a PCB is slotted for it. Otherwise, you can use the extra nut & washer to space it, or easily file it down. I like having them as a pair, even though I needed only one. As I like having spares of EVERYTHING. Not a criticism, just a warning. The pot body is a bit bigger than other B500k on/off pots. It may not fit in all applications. But it fit fine for me since it's essentially a metal box with lots of free space inside. Some sort of rack audio equipment might not.

## Features

- Product Name : Switch Carbon Potentiometer;Model : WH138 B500k ohm;Technology : Carbon Composition
- Rated Power : 0.2W/0.1W;Resistance Value : 500K ohm;Shaft Diameter : 6mm / 0.24"
- Shaft Length : 13.5mm / 0.53";Base Height : 18mm / 0.71" ; Knob Diameter: 21x17mm (D*H)
- Base Diameter : 24mm / 0.94";Color : Black , Aerugo
- Weight : 32g;Package Content : 2 x Switch Carbon Potentiometer + 2 x black Aluminum alloy knob

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07DHGCQC7 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #28,478 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #14 in Potentiometers |
| Customer Reviews | 4.5 4.5 out of 5 stars (397) |
| Date First Available | June 1, 2018 |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 2 |
| Item Weight | 1.76 ounces |
| Item model number | 500K ohm |
| Manufacturer | TWTADE |
| Material | carbon |
| Package Dimensions | 4.25 x 3.39 x 1.54 inches |
| Part Number | 500K ohm |
| Size | 500k ohm |

## Images

![TWTADE 2Pcs 500K Ohm Single Linear Taper Dimmer Potentiometer with on/Off Switch + 2pcs Black Aluminum Alloy knob - Image 1](https://m.media-amazon.com/images/I/71EF7dTFusL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ A good purchase at a fair price shipped quickly
*by A***R on July 8, 2025*

Shipped fast & works good for our application still after many months, so I call it good

### ⭐⭐⭐⭐⭐ Sturdy 500k pot.
*by A***K on August 8, 2025*

These are solid on/off 500k ohm potentiometers. Spec'ed right on the money using my multimeter. They're solid and have that higher quality "beefy" feeling. I needed them to repair a lab hotplate & magnetic stirrer. The original pot plastic disk that holds the knob axle & sweeps the varistor... just mashed & cracked. I have a lot more confidence in this one. The knob stem was standard, and I could use the original knob head to keep the cosmetic appearance the same. There's a nice zinc die-cast face to the potentiometer body that also has a raised standoff and anti-rotation tab if the panel surface or a PCB is slotted for it. Otherwise, you can use the extra nut & washer to space it, or easily file it down. I like having them as a pair, even though I needed only one. As I like having spares of EVERYTHING. Not a criticism, just a warning. The pot body is a bit bigger than other B500k on/off pots. It may not fit in all applications. But it fit fine for me since it's essentially a metal box with lots of free space inside. Some sort of rack audio equipment might not.

### ⭐⭐⭐⭐ Not great. but... works.
*by T***A on October 10, 2019*

These are kinda crap, unfortunately. Used as a replacement switch for my Zadro Lighted Mirror. Switch is flimsy and the connection inside is loose, causing the light to flicker. Since it comes with two switches, I'll try the other one tomorrow. Hopefully it will be better. Update: Soldered the second switch on, works just fine. must have just gotten a rotten one. With that being said, I think this company sent me an extra order of switches. Received them today. That was nice of them. I don't want to change my review on these switches because it was the truth, but I will update the stars from 2 to 4, losing one star for the inconvenience of having to replace the fist one.

## Frequently Bought Together

- TWTADE 2Pcs 500K Ohm Single Linear Taper Dimmer Potentiometer with on/Off Switch + 2pcs Black Aluminum Alloy knob
- TWTADE / 3pcs wh138 10k ohm Potentiometer Single Turn Rotary Linear Variable Potentiometer +3pcs black Aluminum alloy knob
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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-05*