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KLEIN TOOLS ET110
Klein Tools ET110 CO Meter with Exposure Limit Alarm | Portable Carbon Monoxide Detector, Batteries and Carry Pouch
In Stock
- Price
- $129.99
- Brand
- KLEIN TOOLS
Prices from Amazon as of . Product prices and availability are accurate as of the date and time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of the product. As an Amazon Associate I earn from qualifying purchases.
How it compares
Compared with the other carbon monoxide detectors on this site that list each value:
- Response time (T90) is higher than 71% of 7 others: 60 s
- Sensor life is higher than 85% of 7 others: 5.0 years
- Length is the highest of 18: 7.75 in. (197 mm)
- Width is lower than 76% of 17 others: 2.16 in. (55 mm)
- Depth/Height is lower than 70% of 17 others: 1.45 in. (37 mm)
- Operating temp min is higher than 87% of 8 others: 32 ℉ (0 ℃)
Specifications
These details are subject to change and may not be current. Please check Amazon or manufacturer web site to confirm before purchase.
Detection capabilities
- Min. CO detection
- 0 ppm
- Max. CO detection
- 1,000 ppm
- Resolution
- 1 ppm
- Gases detected
- CO
- Response time (T90)
- 60 s
- Accuracy
- ±5% or 5 ppm, whichever is greater
- Sensor type
- Electrochemical
- Sensor life
- 5.0 years
Alarms
- Low alarm level
- 35 ppm
- High alarm level
- 200 ppm
- TWA / STEL alarms
- Yes
Charging
- Charging port
- None
Physical Attributes
- Weight
- 0.32 lbs
- Weight
- 0.15 kg
- Length
- 7.75 in.
- Length
- 197 mm
- Width
- 2.16 in.
- Width
- 55 mm
- Depth/Height
- 1.45 in.
- Depth/Height
- 37 mm
Operating Temp Range
- Operating temp min
- 32 ℉
- Operating temp max
- 122 ℉
- Operating temp min
- 0 ℃
- Operating temp max
- 50 ℃
Certifications
- NIST traceable calibration
- No
- UL 2034 listed
- No
- Certifications summary
- CE, CAN ICES-003 (B)/NMB-003 (B)
Features
Details from the KLEIN TOOLS ET110 Amazon listing:
- 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
Similar products from other brands
Chosen for their similar specifications and price.
 This productKLEIN TOOLS ET110 |
 FORENSICS DETECTORS FD FD-101-CO |
 TOPTES Guard-101 |
 BW Technologies GasAlertMicroClip XL |
|
|---|---|---|---|---|
| Price | $129.99 | $99.00 | $99.99 | $569.50 |
| Model | ET110 | FD-101-CO | Guard-101 | GasAlertMicroClip XL |
| Popular brand | Yes | – | – | – |
| Min. CO detection (ppm) | 0 | 0 | 0 | 0 |
| Max. CO detection (ppm) | 1,000 | 1,000 | 1,000 | 500 |
| Resolution (ppm) | 1 | 1 | 1 | 1 |
| Gases detected | CO | CO | CO, H2S, O2 and LEL (combustible gas) | CO, H2S, O2 and LEL (combustible gas) |
| Response time (T90) (s) | 60 | 60 | 60 | – |
| Accuracy | ±5% or 5 ppm, whichever is greater | ±5% F.S. | CO ±10% | CO ±10% |
| Sensor type | Electrochemical | Electrochemical | Electrochemical | – |
| Sensor life (years) | 5.0 | 2.0 | 2.0 | 5.0 |
| Built-in pump | – | No | No | No |
| Low alarm level (ppm) | 35 | 50 | 50 | 35 |
| High alarm level (ppm) | 200 | 150 | 200 | 200 |
| Alarm loudness (dB) | – | 90 | – | 95 |
| Adjustable alarm levels | – | Yes | Yes | Yes |
| TWA / STEL alarms | Yes | Yes | – | Yes |
| Charging time (hours) | – | – | 8.0 | 6.0 |
| Battery runtime (hours) | – | 17,520 | 12 | 18 |
| Battery capacity (mAh) | – | – | 2,000 | – |
| Charging port | None | None | – | – |
| Battery chemistry | – | Lithium (non-replaceable) | Lithium (non-replaceable) | Lithium-ion polymer |
| Weight (lbs) | 0.32 | 0.25 | 0.44 | 0.42 |
| Weight (kg) | 0.15 | 0.11 | 0.20 | 0.19 |
| Length (in.) | 7.75 | 3.60 | 5.12 | 4.40 |
| Length (mm) | 197 | 91 | 130 | 113 |
| Width (in.) | 2.16 | 2.10 | 2.56 | 2.40 |
| Width (mm) | 55 | 53 | 65 | 60 |
| Depth/Height (in.) | 1.45 | 1.30 | 1.77 | 1.20 |
| Depth/Height (mm) | 37 | 33 | 45 | 32 |
| IP rating | – | IP67 | – | IP68 |
| Operating temp min (℉) | 32 | 32 | -4 | -4 |
| Operating temp max (℉) | 122 | 122 | 122 | 122 |
| Operating temp min (℃) | 0 | 0 | -20 | -20 |
| Operating temp max (℃) | 50 | 50 | 50 | 50 |
| NIST traceable calibration | No | Yes | – | – |
| ATEX / IECEx certified | – | – | – | Yes |
| Class I Div. 1 (UL/CSA) | – | – | – | Yes |
| UL 2034 listed | No | – | – | – |
| Certifications summary | CE, CAN ICES-003 (B)/NMB-003 (B) | CE | CE, UKCA, RoHS, FCC, Ex ib IIB T3 Gb mark | CSA Class I Div. 1 Groups A-D, ATEX, IECEx, CE, KTL, INMETRO, FCC Part 15 Class B statement |
| Warranty | – | 1 Year | 3 Years | 2 Years |
Data sources
Data for this product compiled from these sources:
Specifications last updated Oct 12, 2026.