---
product_id: 4478349
title: "Signstek MESR-100 V2 Auto Ranging in Circuit ESR Meter Capacitor Tester/Low Ohm Meter Up to 0.01 to 100R, Support in Measuring Capacitance Resistance Circuit"
brand: "signstek"
price: "83355CFA"
currency: XOF
in_stock: true
reviews_count: 9
category: "Signstek"
url: https://www.desertcart.sn/products/4478349-signstek-mesr-100-v2-auto-ranging-in-circuit-esr-meter
store_origin: SN
region: Senegal
---

# 0.01 to 100Ω ultra-wide resistance range Auto-ranging for seamless, precise readings Dual terminals for fast in-circuit testing Signstek MESR-100 V2 Auto Ranging in Circuit ESR Meter Capacitor Tester/Low Ohm Meter Up to 0.01 to 100R, Support in Measuring Capacitance Resistance Circuit

**Brand:** signstek
**Price:** 83355CFA
**Availability:** ✅ In Stock

## Summary

> 🔧 Diagnose Like a Pro, Repair Like a Boss!

## Quick Answers

- **What is this?** Signstek MESR-100 V2 Auto Ranging in Circuit ESR Meter Capacitor Tester/Low Ohm Meter Up to 0.01 to 100R, Support in Measuring Capacitance Resistance Circuit by signstek
- **How much does it cost?** 83355CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/4478349-signstek-mesr-100-v2-auto-ranging-in-circuit-esr-meter)

## Best For

- signstek enthusiasts

## Why This Product

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

## Key Features

- • **Precision Meets Speed:** Auto-ranging ESR and low ohm meter delivers quick, reliable capacitor and resistor diagnostics without desoldering.
- • **User-Friendly Reference:** Built-in printed ESR table ensures instant interpretation of results—no guesswork, just clarity.
- • **Trusted by Professionals:** Proven accuracy and repeatability across hundreds of tests, making it the go-to tool for electronics repair pros.
- • **Comprehensive Measurement Range:** From ultra-low 0.01Ω to 100Ω, handle a wide spectrum of resistance and capacitance with confidence.
- • **In-Circuit Testing Made Effortless:** Dual terminal design lets you test components directly on the board, saving valuable repair time.

## Overview

The Signstek MESR-100 V2 is a battery-powered, auto-ranging ESR and low ohm meter designed for in-circuit testing of capacitors and resistors. Featuring a wide measurement range from 0.01 to 100 ohms and dual terminals for quick diagnostics, it offers reliable, repeatable results with a handy printed ESR reference table. Ideal for electronics professionals seeking efficient, precise troubleshooting without desoldering.

## Description

Signstek MESR-100 V2 Auto Ranging in Circuit ESR Meter Capacitor Tester/Low Ohm Meter Up to 0.01 to 100R, Support in Measuring Capacitance Resistance Circuit: desertcart.com: Industrial & Scientific

Review: This is a great tool for troubleshooting and saves me a lot of ... - I do electronics repair as a second job. This is a great tool for troubleshooting and saves me a lot of time. Bad capacitors are a frequent problem but they are difficult to test and I don't have the time to just replace every capacitor I run across on finicky equipment. PROs: Tests capacitors better than a multimeter without having to desolder them. Posts the results in plain English as well as the numeric readings. It's reliable. I have tested quite a few capacitors so far and the results so far are accurate and repeatable. It's inexpensive. I shopped around for a quality ESR and found that units typically cost more than this, have to ship from China or Russia, and frequently don't have as many features. CONSs: The battery door is difficult to get to. The stand is in the way. It's a minor hassle. I plan to just remove the stand entirely as I do not use it. It's not extremely precise, particularly on small capacitors. Caps below a certain point you have to look up on a table (which is handily printed on the unit). The numbers can vary a little but not enough to make a difference for what I'm testing. All I want to know is the answer to one question: "Is this a good cap?" It's precise enough to be accurate in answering this question and that is all I care about.
Review: A great meter for testing capacitors. - I have used this meter now to test over 500 capacitors and it has performed flawlessly. The only situation I would advise users of is not to relay only on the auto-ranging capability of the meter. Auto-range works great but for some capacitors the ESR is close to the limit of two ranges and the meter will jump back and forth trying to resolve the resistance. If this occurs simply press the mode range button once or twice until the reading stabilizes. This meter can be used for in-circuit testing of capacitors as well but so far I have not needed it for that.

## Features

- Dual terminal, for fast and easy inspect general capacitor or resistor, a printed ESR table for fast check
- Wide Measurement Range
- Auto-ranging capacitor ESR and Low Ohm Meter

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00GYSFOM6 |
| Best Sellers Rank | #24,209 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Capacitance Meters |
| Brand | Signstek |
| Color | Black |
| Date First Available | November 28, 2013 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 8 ounces |
| Item model number | US-171024-02 |
| Manufacturer | Signstek |
| Measurement Type | LCR Meter |
| Min. Operating Voltage | 15 Millivolts |
| Package Dimensions | 6.65 x 3.74 x 1.93 inches |
| Power Source | Battery Powered |
| Style | Circuit Testers |
| UPC | 710219731090 |

## Product Details

- **Brand:** Signstek
- **Color:** Black
- **Item Weight:** 8 ounces
- **Power Source:** Battery Powered
- **Style:** Circuit Testers

## Images

![Signstek MESR-100 V2 Auto Ranging in Circuit ESR Meter Capacitor Tester/Low Ohm Meter Up to 0.01 to 100R, Support in Measuring Capacitance Resistance Circuit - Image 1](https://m.media-amazon.com/images/I/61i9HAWQHGL.jpg)
![Signstek MESR-100 V2 Auto Ranging in Circuit ESR Meter Capacitor Tester/Low Ohm Meter Up to 0.01 to 100R, Support in Measuring Capacitance Resistance Circuit - Image 2](https://m.media-amazon.com/images/I/51VZ+3CX3KL.jpg)
![Signstek MESR-100 V2 Auto Ranging in Circuit ESR Meter Capacitor Tester/Low Ohm Meter Up to 0.01 to 100R, Support in Measuring Capacitance Resistance Circuit - Image 3](https://m.media-amazon.com/images/I/516vYOun6ML.jpg)
![Signstek MESR-100 V2 Auto Ranging in Circuit ESR Meter Capacitor Tester/Low Ohm Meter Up to 0.01 to 100R, Support in Measuring Capacitance Resistance Circuit - Image 4](https://m.media-amazon.com/images/I/619Q6gunaHL.jpg)
![Signstek MESR-100 V2 Auto Ranging in Circuit ESR Meter Capacitor Tester/Low Ohm Meter Up to 0.01 to 100R, Support in Measuring Capacitance Resistance Circuit - Image 5](https://m.media-amazon.com/images/I/61xMwnmd6-L.jpg)

## Questions & Answers

**Q: Is there a way to confirm it's v2 with sine wave and not v1?**
A: In the description on my order it is listed as V2. On a scope, with the meter open circuit, the test waveform is a rounded square wave. When connected to a 100 ohm resistor, the waveform is more of a triangle wave. When connected to a capacitor, it is somewhere between a triangle and a sine wave.

**Q: can this meter perform a leak test on motor start capacitors?**
A: No. This meter is for one test only - ESR of a capacitor. It does not perform any other tests.

**Q: Values in 35v and higher columns decrease as you go down, columns for 10,16,25v decrease, then go back up.  is this a typo?  hint: look for ".12"**
A: Better to use on of the ESR charts you can find online, not the one printed on the case (whether it's right or wrong)

**Q: what is better about v2 (version 2) of this MESR-100 meter for the extra $10 it costs over the original version?**
A: Compare MESR100 old V1 and new V2 Improvement: For an extra $10 I would get version 2 which is what I have now.

1)      Change square wave to sine wave 100 KHz, reduce square wave’s high frequency component, and affect the reading passing the test leads and capacitor.
2)      Higher Resolution up to 0.001 ohm.
3)      128X64 dot matrix LCD, with more larger value display and information
4)      Embedded 25V capacitor table at LCD, auto display the capacitor is good or bad reference to common 25V electrolytic capacitor.
5)      New plastic case, curve design for hand carrying. New stand for 60 degree stand on desk.
6)      Use 2X AA battery, more convenience and longer battery life than 9V battery.
7)      Support external USB power, using standard micro-USB port.

## Customer Reviews

### ⭐⭐⭐⭐⭐ This is a great tool for troubleshooting and saves me a lot of ...
*by G***R on February 11, 2015*

I do electronics repair as a second job. This is a great tool for troubleshooting and saves me a lot of time. Bad capacitors are a frequent problem but they are difficult to test and I don't have the time to just replace every capacitor I run across on finicky equipment. PROs: Tests capacitors better than a multimeter without having to desolder them. Posts the results in plain English as well as the numeric readings. It's reliable. I have tested quite a few capacitors so far and the results so far are accurate and repeatable. It's inexpensive. I shopped around for a quality ESR and found that units typically cost more than this, have to ship from China or Russia, and frequently don't have as many features. CONSs: The battery door is difficult to get to. The stand is in the way. It's a minor hassle. I plan to just remove the stand entirely as I do not use it. It's not extremely precise, particularly on small capacitors. Caps below a certain point you have to look up on a table (which is handily printed on the unit). The numbers can vary a little but not enough to make a difference for what I'm testing. All I want to know is the answer to one question: "Is this a good cap?" It's precise enough to be accurate in answering this question and that is all I care about.

### ⭐⭐⭐⭐⭐ A great meter for testing capacitors.
*by R***. on October 3, 2024*

I have used this meter now to test over 500 capacitors and it has performed flawlessly. The only situation I would advise users of is not to relay only on the auto-ranging capability of the meter. Auto-range works great but for some capacitors the ESR is close to the limit of two ranges and the meter will jump back and forth trying to resolve the resistance. If this occurs simply press the mode range button once or twice until the reading stabilizes. This meter can be used for in-circuit testing of capacitors as well but so far I have not needed it for that.

### ⭐⭐⭐⭐ excellent, but leads too short
*by W***I on January 20, 2026*

Works well to identify defective capacitors. As many people have said, the leads are not just too short, they are tied to close to one another. The leads need another 4" and the separation needs to be another 2" to be able to get to awkward connections.

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-02-22*