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10 models to compare

How do gas detector probe and power options differ?

TopTes PT760 and PT520A each have a maker upper range of 10,000 ppm. Choose the power setup first.

These handheld detectors cannot certify emergency suitability or replace continuous home gas alarms.

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With no preferences selected: ET120 Combustible Gas Leak Detector is one option to compare.

No hands-on testingMethod and sources

ET120 Combustible Gas Leak Detector · first with a product link

  • Power source: AAA batteries.
  • Probe design: Flexible probe.
What to note:

Maker range ceiling: 10,000 ppm.

View at Klein Tools

If you choose Rechargeable for power source, the first option with a product link becomes PT-830S Gas Leak Detector.

10 models compared; 10 have a product-page link.

The picks

5 options to compare

Compare the details that matter to your setup.

An option to compare

ET120 Combustible Gas Leak Detector

Power source: AAA batteries.

Key details

  • Probe design: Flexible probe.

What to note

Maker range ceiling: 10,000 ppm.

Power source: AAA batteriesProbe design: Flexible probeMaker range ceiling: 10,000 ppm
See all 3 specs
Power sourceAAA batteries
Probe designFlexible probe
Maker range ceiling10,000 ppm

3 of 3 specs available · source checked September 28, 2026 · Source ↗
Klein Tools · Product page checked September 28, 2026

View at Klein Tools
Power source: Rechargeable

PT-830S Gas Leak Detector

Power source: Rechargeable.

Key details

  • Probe design: Flexible probe.

What to note

Maker range ceiling: 10,000 ppm.

Power source: RechargeableProbe design: Flexible probeMaker range ceiling: 10,000 ppm
See all 3 specs
Power sourceRechargeable
Probe designFlexible probe
Maker range ceiling10,000 ppm

3 of 3 specs available · source checked September 28, 2026 · Source ↗
TopTes · Product page checked September 28, 2026

View at TopTes
Probe design: Pocket body

PT177 Gas Leak Detector

Probe design: Pocket body.

Key details

  • Power source: AAA batteries.

What to note

Not listed by the maker: maker range ceiling.

Power source: AAA batteriesProbe design: Pocket body
See all 3 specs
Power sourceAAA batteries
Probe designPocket body
Maker range ceilingNot listed by the maker

2 of 3 specs available · source checked September 28, 2026 · Source ↗
TopTes · Product page checked September 28, 2026

View at TopTes
Probe design: Telescopic probe

PT299 Gas Leak Detector

Probe design: Telescopic probe.

Key details

  • Maker range ceiling: 5,000 ppm.

What to note

Power source: AAA batteries.

Power source: AAA batteriesProbe design: Telescopic probeMaker range ceiling: 5,000 ppm
See all 3 specs
Power sourceAAA batteries
Probe designTelescopic probe
Maker range ceiling5,000 ppm

3 of 3 specs available · source checked September 28, 2026 · Source ↗
TopTes · Product page checked September 28, 2026

View at TopTes
Also compare 5

PT199 Gas Leak Detector

Probe design: Pocket body.

Key details

  • Power source: AAA batteries.

What to note

Not listed by the maker: maker range ceiling.

Power source: AAA batteriesProbe design: Pocket body
See all 3 specs
Power sourceAAA batteries
Probe designPocket body
Maker range ceilingNot listed by the maker

2 of 3 specs available · source checked September 28, 2026 · Source ↗
TopTes · Product page checked September 28, 2026

View at TopTes

Comparing ET120 Combustible Gas Leak Detector · PT-830S Gas Leak Detector

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The facts that differ

Choose up to three models to compare side by side.

2 identical specs shown. Details that do not apply to these models are omitted.

Published specification comparison
SpecET120 Combustible Gas Leak DetectorNo preferences selected.PT-830S Gas Leak DetectorNo preferences selected.
Power sourceAAA batteriesRechargeable
Probe designFlexible probeFlexible probe
Maker range ceiling10,000 ppm10,000 ppm

ET120 Combustible Gas Leak Detector

No preferences selected.

Power source
AAA batteries
Probe design
Flexible probe
Maker range ceiling
10,000 ppm

PT-830S Gas Leak Detector

No preferences selected.

Power source
Rechargeable
Probe design
Flexible probe
Maker range ceiling
10,000 ppm

ET120 Combustible Gas Leak Detector

View at Klein Tools

PT-830S Gas Leak Detector

View at TopTes

Compare all 10 models

— = no verified listing yet. The published order is independent of links.

All models and their decision specs
ProductHow it comparesKey specCompareAction
ET120 Combustible Gas Leak Detector
Compared with PT-830S Gas Leak Detector: power source, AAA batteries vs Rechargeable.
Power source: AAA batteriesView at Klein Tools
PT-830S Gas Leak Detector
Compared with PT177 Gas Leak Detector: power source, Rechargeable vs AAA batteries.
Power source: RechargeableView at TopTes
PT177 Gas Leak Detector
Compared with PT210S Gas Leak Detector: probe design, Pocket body vs Flexible probe.
Power source: AAA batteriesView at TopTes
PT199 Gas Leak Detector
Compared with PT210S Gas Leak Detector: probe design, Pocket body vs Flexible probe.
Power source: AAA batteriesView at TopTes
PT205 Gas Leak Detector
Compared with PT210S Gas Leak Detector: probe design, Pocket body vs Flexible probe.
Power source: AAA batteriesView at TopTes
PT210S Gas Leak Detector
Compared with PT299 Gas Leak Detector: probe design, Flexible probe vs Telescopic probe.
Power source: AAA batteriesView at TopTes
PT299 Gas Leak Detector
Compared with PT520A Gas Leak Detector: probe design, Telescopic probe vs Flexible probe.
Power source: AAA batteriesView at TopTes
ET120 Combustible Gas Leak Detector
Compared with PT-830S Gas Leak Detector: power source, AAA batteries vs Rechargeable.
Power source: AAA batteries
View at Klein Tools
PT-830S Gas Leak Detector
Compared with PT177 Gas Leak Detector: power source, Rechargeable vs AAA batteries.
Power source: Rechargeable
View at TopTes
PT177 Gas Leak Detector
Compared with PT210S Gas Leak Detector: probe design, Pocket body vs Flexible probe.
Power source: AAA batteries
View at TopTes
PT199 Gas Leak Detector
Compared with PT210S Gas Leak Detector: probe design, Pocket body vs Flexible probe.
Power source: AAA batteries
View at TopTes
PT205 Gas Leak Detector
Compared with PT210S Gas Leak Detector: probe design, Pocket body vs Flexible probe.
Power source: AAA batteries
View at TopTes
PT210S Gas Leak Detector
Compared with PT299 Gas Leak Detector: probe design, Flexible probe vs Telescopic probe.
Power source: AAA batteries
View at TopTes
PT299 Gas Leak Detector
Compared with PT520A Gas Leak Detector: probe design, Telescopic probe vs Flexible probe.
Power source: AAA batteries
View at TopTes
10 catalog models

How the comparison works

Your choices are compared with each model’s product details. A missing or conflicting value stays unknown and cannot satisfy a choice you select. The starting order helps you browse; it does not rate real-world performance.

Source dates appear with each link below. A source date does not confirm today's price or stock.

Finder methodologyReport a correction
Sources for all 10 models
  • ET120 Combustible Gas Leak Detector: Source 1 ↗ · September 28, 2026
  • PT-830S Gas Leak Detector: Source 1 ↗ · September 28, 2026
  • PT177 Gas Leak Detector: Source 1 ↗ · September 28, 2026
  • PT199 Gas Leak Detector: Source 1 ↗ · September 28, 2026
  • PT205 Gas Leak Detector: Source 1 ↗ · September 28, 2026
  • PT210S Gas Leak Detector: Source 1 ↗ · September 28, 2026
  • PT299 Gas Leak Detector: Source 1 ↗ · September 28, 2026
  • PT520A Gas Leak Detector: Source 1 ↗ · September 28, 2026
  • PT520B+ Gas Leak Detector: Source 1 ↗ · September 28, 2026
  • PT760 Gas Leak Detector: Source 1 ↗ · September 28, 2026

Choose access and power before comparing gas ranges

TopTes offers pocket bodies, flexible probes and telescopic probes in this comparison. Its power options include AAA batteries and rechargeable designs. The Klein Tools selection combines AAA batteries with a flexible probe. Start with the access you need and the power arrangement you can maintain.

The known upper range endpoints run from 5000 to 10000 ppm. TopTes has flexible-probe models at both endpoints, so a probe style alone does not identify the range. These are maker range figures, not measurements of detection accuracy or sensitivity, and reference gases must be read for the exact instrument.

A portable gas finder is not a home alarm

The TopTes pocket-body entries illustrate a data gap: some have no supported range ceiling. A missing ceiling is not a lower sensitivity rating, and selecting a minimum known ceiling excludes those entries rather than resolving the missing detail. The source comparison contains no leak-detection trials. Portable instruments here are distinct from permanently installed home alarms; their range and probe descriptions do not assess alarm certification or emergency suitability. Follow the maker's operating and reference-gas instructions. Do not use this product comparison to decide whether a suspected gas emergency is safe.

Before you buy

Does a higher range establish sensitivity?

An upper endpoint describes measurement range, not accuracy or sensitivity. Some figures use methane as reference gas, and response to other gases can differ across makers.

Why are PT177 and PT199 ranges unknown?

Their saved pages lack numeric range values. They use AAA batteries and pocket-body probes, but a minimum numeric range cannot be established from those features.

Can I use this as my home’s permanent gas alarm?

This comparison covers portable instruments for locating combustible gas. It does not assess alarm certification, emergency suitability or whether your home is safe. TopTes PT760 and PT520A each have a maker upper range of 10,000 ppm. PT760 is rechargeable with a telescopic probe; PT520A uses AAA batteries and a flexible probe. Choose the power setup first. PT760 suits you for that rechargeable setup. These handheld tools do not certify emergency suitability or replace continuous home gas alarms.