---
product_id: 47397158
title: "ET110 CO Meter, Carbon Monoxide Tester and Detector with Exposure Limit Alarm, 4 x AAA Batteries and Carry Pouch Included"
brand: "klein tools"
price: "VT54431"
currency: VUV
in_stock: true
reviews_count: 11
category: "Klein Tools"
url: https://www.desertcart.vu/products/47397158-et110-co-meter-carbon-monoxide-tester-and-detector-with-exposure
store_origin: VU
region: Vanuatu
---

# Accurate CO measurement up to 1000 ppm Auto power-off saves battery life Dual audible & visual alarms at 35 & 200 ppm ET110 CO Meter, Carbon Monoxide Tester and Detector with Exposure Limit Alarm, 4 x AAA Batteries and Carry Pouch Included

**Brand:** klein tools
**Price:** VT54431
**Availability:** ✅ In Stock

## Summary

> 🚨 Stay safe, stay savvy: The pro’s choice for carbon monoxide peace of mind.

## Quick Answers

- **What is this?** ET110 CO Meter, Carbon Monoxide Tester and Detector with Exposure Limit Alarm, 4 x AAA Batteries and Carry Pouch Included by klein tools
- **How much does it cost?** VT54431 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/47397158-et110-co-meter-carbon-monoxide-tester-and-detector-with-exposure)

## Best For

- klein tools enthusiasts

## Why This Product

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

## Key Features

- • **Dual Alarm System:** Stay ahead of danger with both low and high-level CO alerts—never miss a critical warning.
- • **Battery Smart Tech:** Auto shut-off after 20 minutes extends battery life, so your meter is ready when you need it.
- • **Backlit LCD Display:** Read CO concentration and temperature clearly anytime, even in low-light environments.
- • **Portable & Ready-to-Go:** Includes 4 AAA batteries and a sleek carrying pouch—safety that moves with you.
- • **Precision CO Detection:** Pinpoint carbon monoxide levels with professional-grade accuracy for ultimate safety.

## Overview

The Klein Tools ET110 CO Meter is a compact, professional-grade carbon monoxide detector featuring precise ppm measurement up to 1000, dual audible and visual alarms at critical exposure levels, and a backlit LCD for easy reading. Designed for HVAC pros and safety-conscious homeowners alike, it includes 4 AAA batteries and a carrying pouch, with smart auto power-off to maximize battery life. Trusted craftsmanship from a family-owned American brand since 1857 ensures durability and reliability in every use.

## Description

The ET110 CO Detector is an easy-to-use meter that detects and measures concentration levels of carbon monoxide (ppm) and temperature (Fahrenheit/Celsius), making it the perfect choice for HVAC professionals. Features backlit LCD screen, warning indicator light, audible and visual alarms and multiple function buttons. Includes carrying pouch and 4 x AAA batteries. For more than 160 years, Klein Tools has manufactured premium-quality, professional-grade hand tools that deliver the performance, durability and precision needed to get the job done right. Our family of engineers, workers and craftsman continue to put six generations of expertise into every tool we create by using only the highest quality materials, superior workmanship, and keeping manufacturing as close to home as we can. Klein isn't just the name of our company, it's also our family name. And since we're an American company that's family-owned and family-run, you know you can count on us to be here tomorrow. Klein Tools doesn't just make great products, we make great products that stand up to the demands of the professionals who use them every day ... Since 1857.

Review: Appears to work as expected. - Appears to work as expected. Reports zero when in clear air. Reports over 300PPM when placed about 4ft from UTV exhaust (it's a 20 year old gas engine). The response time was 2-3 seconds 4ft from gas engine exhaust and readings zoomed over 300ppm and I moved away. Real world quick test appears to work. I tested our home air ducts in several places with this meter and all of them read 0. We wanted to put a number to CO ppm in addition to the smoke detectors with CO detection which always show OK without any numeric value. Having a good quality meter seems like a wise idea if you have natural gas or propane heating. I am happy with the unit after one use. Note: If you are a home owner and not likely to use the meter very often, consider removing the AAA batteries after each use so there is no chance of a battery leaking into the meter.
Review: great tool, alerts us of CO before the alarm can go off! - I bought this because we have had 2 CO alarms go off at like 10PM, which is no fun. Yup fire dept and local natural gas tech had to show and clear our house of CO leaks, BEFORE we could get back in our house. Turns out our gas fireplace had glass chips in it - something great new idea apparently - but they we covering up the air slots in the interior of the gas fireplace. So the CO was being kept down inside the fireplace, instead of pulling in the fresh air from the house. Once I removed the glass chips it did fix the problem!!! But I wanted to be sure and not get the opportunity to be stuck outside again! Thanks to a local fireplace install company! I kept the Klein CO sensor running for a couple of hours and no CO!!!

## Features

- ACCURATE CO GAS MEASUREMENT: Detect and measure carbon monoxide gas levels with precision using our easy-to-use CO meter
- PORTABLE AND PROTECTIVE: Carry our CO detector anywhere for user safety, with a built-in short-term exposure limit (STEL) alarm
- DUAL ALARM SYSTEM: Stay informed about CO levels with both low (35 ppm) and high (200 ppm) level alarms, ensuring prompt action
- AUDIBLE AND VISUAL ALERTS: Receive immediate warnings through audible and visual alarms, providing increased safety and peace of mind
- CLEAR DISPLAY: Backlit display shows CO measurements (0 to 1000 ppm) and temperature (Fahrenheit and Celsius) for easy reading
- BATTERY SAVING FEATURE: Auto-power off after 20 minutes of inactivity helps conserve battery life, extending the device's usability
- CONVENIENT PACKAGE: Includes a carrying pouch and 4xAAA batteries, making it easy to transport and operate the CO meter efficiently

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B071GGL75N |
| Alarm | Visual |
| Batteries | 4 AAA batteries required. (included) |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Alkaline |
| Best Sellers Rank | #14,217 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #67 in Carbon Monoxide Detectors |
| Brand | KLEIN TOOLS |
| Color | Orange |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,222) |
| Date First Available | June 10, 2017 |
| Description Pile | 4 x AAA |
| Display Style | Backlit LCD |
| Finish | Brushed |
| Global Trade Identification Number | 00092644690655 |
| Included Components | Batteries, Pouch |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 5.1 ounces |
| Item model number | ET110 |
| Manufacturer | Klein Tools |
| Material | Blend |
| Measurement System | Metric |
| Number of Items | 1 |
| Part Number | ET110 |
| Pattern | Solid |
| Power Source | hand_powered |
| Product Dimensions | 7.74"D x 2.16"W x 1.46"H |
| Shape | Rectangular |
| Special Features | Audible Alert, Auto-Power Off, Visual Notification |
| Style | Meter |
| UPC | 092644690655 |

## Product Details

- **Alarm:** Visual
- **Brand:** KLEIN TOOLS
- **Color:** Orange
- **Global Trade Identification Number:** 00092644690655
- **Item Weight:** 5.1 Ounces
- **Material:** Blend
- **Number of Items:** 1
- **Power Source:** hand_powered
- **Product Dimensions:** 7.74"D x 2.16"W x 1.46"H
- **Style:** Meter

## Images

![ET110 CO Meter, Carbon Monoxide Tester and Detector with Exposure Limit Alarm, 4 x AAA Batteries and Carry Pouch Included - Image 1](https://m.media-amazon.com/images/I/41OvBezA3JL.jpg)

## Questions & Answers

**Q: I would like to use this to measure Co levels in customer warehouses where they run propane forklifts would this be a good tool for that?**
A: I think it should be a good use for that, I use it at home with non vented gas fireplace. Running the fireplace for extensive times raises CO level and I could see it with this tool. The reading was still showing under 50 which is considered somewhat safe but can still affect people with weak immune system. I bought this perticular tool because I trust the brand.

**Q: Can this unit be recalibrated?**
A: Yes, there is a SET button for calibrating. Search "how do you calibrate a Klein Tools ET110 CO Meter" there's a video you can watch.

**Q: Is the case included?**
A: Yes the case (with a belt loop) is included.

**Q: Will high moisture ( as in diesel exhaust gas) and high temps interfer with co readings? i'm getting eratic co readings that don't make sense.**
A: I had an oiled leather tool belt that messed with the readings. Maybe the diesel oil?

## Customer Reviews

### ⭐⭐⭐⭐⭐ Appears to work as expected.
*by K***E on September 22, 2024*

Appears to work as expected. Reports zero when in clear air. Reports over 300PPM when placed about 4ft from UTV exhaust (it's a 20 year old gas engine). The response time was 2-3 seconds 4ft from gas engine exhaust and readings zoomed over 300ppm and I moved away. Real world quick test appears to work. I tested our home air ducts in several places with this meter and all of them read 0. We wanted to put a number to CO ppm in addition to the smoke detectors with CO detection which always show OK without any numeric value. Having a good quality meter seems like a wise idea if you have natural gas or propane heating. I am happy with the unit after one use. Note: If you are a home owner and not likely to use the meter very often, consider removing the AAA batteries after each use so there is no chance of a battery leaking into the meter.

### ⭐⭐⭐⭐⭐ great tool, alerts us of CO before the alarm can go off!
*by T***M on February 10, 2025*

I bought this because we have had 2 CO alarms go off at like 10PM, which is no fun. Yup fire dept and local natural gas tech had to show and clear our house of CO leaks, BEFORE we could get back in our house. Turns out our gas fireplace had glass chips in it - something great new idea apparently - but they we covering up the air slots in the interior of the gas fireplace. So the CO was being kept down inside the fireplace, instead of pulling in the fresh air from the house. Once I removed the glass chips it did fix the problem!!! But I wanted to be sure and not get the opportunity to be stuck outside again! Thanks to a local fireplace install company! I kept the Klein CO sensor running for a couple of hours and no CO!!!

### ⭐⭐⭐⭐⭐ Seems to function correctly
*by A***S on December 19, 2025*

Reassuring to have.

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-02-08*