TOPTES

PT520A Gas Leak Detector

Wide Gas Compatibility:

Quickly and accurately detects multiple combustible gases, including Natural Gas, Propane, Methane, LPG, and Butane.

17" Flexible Gooseneck:

The extended flexible probe easily bends and reaches into tight, hard-to-access areas like deep pipelines, valves, and basements.

Instant Dual Alarm:

Reacts in under 0.5 seconds with a vibrant 7-level color bar display and a 75dB audible alarm that intensify as gas concentration rises (50–10,000 ppm).

Smart & One-Handed Control:

Features an Auto-Off power saver, a quick Mute button for quiet spaces, and an ergonomic, non-slip grip for reliable field handling.

What You Get: 1× PT520A Detector, 3× AAA Batteries, 1× Durable Protective Case, and 1× User Manual.

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A CLOSER LOOK

Explore PT520A Gas Leak Detector

TOPTES PT-520A 360 view

Technical Specifications

Sensor

Electrochemical

Warm-up Time

30 seconds

Detection Range

50 to 10,000 ppm

Alarm

Audible & Visual

Power Source

3 x AAA batteries (Included)

Operating Temperature

0 - 50°C

Relative Humidity

20 - 80%RH

Dimensions

11.22"D x 2.36"W x 5.31"H 

Weight

0.5kg

Material

ABS

Certification

CE, UKCA, RoHS, FCC

User Manual

AS SEEN ON

Choose Your Match

PT520 Gas Leak Detector Series

  • PT520A

  • PT520A+

  • PT520B+

$39.99

17 inch Long Probe

Range: 50 to 10,000 ppm

3x AAA batteries (included)

Detected Combustible Gases: Alcohol, Ammonia, Butane, Gasoline, Hydrogen, Methane, Natural Gas, Propane

Mute Button & 3 Sensitivity Adjust

Auto Power-off

$49.99

17 inch Long Probe

Range: 50 to 10,000 ppm

Rechargeable (Type C cable inclueded)

Detected Combustible Gases: Alcohol, Ammonia, Butane, Gasoline, Hydrogen, Methane, Natural Gas, Propane

Mute Button & 3 Sensitivity Adjust

Auto Power-off

$79.99

17 inch Long Probe

Range: 50 to 10,000 ppm (0-20%LEL)

Rechargeable (Type C cable inclueded)

Four-digit Actual Reading

Temperature Measure

Detected Combustible Gases: Alcohol, Ammonia, Butane, Gasoline, Hydrogen, Methane, Natural Gas, Propane

Mute Button & 3 Sensitivity Adjust

Auto Power-off

$39.99

17 inch Long Probe

Range: 50 to 10,000 ppm

3x AAA batteries (included)

Detected Combustible Gases: Alcohol, Ammonia, Butane, Gasoline, Hydrogen, Methane, Natural Gas, Propane

Mute Button & 3 Sensitivity Adjust

Auto Power-off

$49.99

17 inch Long Probe

Range: 50 to 10,000 ppm

Rechargeable (Type C cable inclueded)

Detected Combustible Gases: Alcohol, Ammonia, Butane, Gasoline, Hydrogen, Methane, Natural Gas, Propane

Mute Button & 3 Sensitivity Adjust

Auto Power-off

$79.99

17 inch Long Probe

Range: 50 to 10,000 ppm (0-20%LEL)

Rechargeable (Type C cable inclueded)

Four-digit Actual Reading

Temperature Measure

Detected Combustible Gases: Alcohol, Ammonia, Butane, Gasoline, Hydrogen, Methane, Natural Gas, Propane

Mute Button & 3 Sensitivity Adjust

Auto Power-off

$39.99

17 inch Long Probe

Range: 50 to 10,000 ppm

3x AAA batteries (included)

Detected Combustible Gases: Alcohol, Ammonia, Butane, Gasoline, Hydrogen, Methane, Natural Gas, Propane

Mute Button & 3 Sensitivity Adjust

Auto Power-off

$49.99

17 inch Long Probe

Range: 50 to 10,000 ppm

Rechargeable (Type C cable inclueded)

Detected Combustible Gases: Alcohol, Ammonia, Butane, Gasoline, Hydrogen, Methane, Natural Gas, Propane

Mute Button & 3 Sensitivity Adjust

Auto Power-off

$79.99

17 inch Long Probe

Range: 50 to 10,000 ppm (0-20%LEL)

Rechargeable (Type C cable inclueded)

Four-digit Actual Reading

Temperature Measure

Detected Combustible Gases: Alcohol, Ammonia, Butane, Gasoline, Hydrogen, Methane, Natural Gas, Propane

Mute Button & 3 Sensitivity Adjust

Auto Power-off

Not sure which fits you?

Evaluations by Professionals

Q: Is the PT520A suitable for continuous monitoring?

A: No, the PT520A is a handheld, portable combustible gas leak detector, designed for periodic detection of gas leaks. It is not intended for continuous monitoring and should be used only to localize the source of a leak during routine checks.

Q: Why do I choose gas leak detectors with gooseneck?

A: With gas leak detectors with probe, you could detect the leaks in hard-to-reach areas. Besides, gas leak detectors could protect your life by preventing potential dangers such as fires or explosions and alerting the presence of toxic gases.

Q: Where could I use TopTes PT520A gas leak detectors?

A: In most hard-to-reach leaks, you could use TopTes PT520A to detect. Besides, natural gas pipelines, gas stoves, ovens, funaces, water heaters, gas storage tanks or gas lines are the most common places for gas leaks.

Q: Why does the TopTes PT520A need to warm up for 30 seconds?

A: Allow the 30-second warm-up to finish in clean, fresh air so the sensor can stabilize and deliver accurate readings. Warming up in an environment with gas present may affect the sensor and lead to inaccurate or delayed detection.

Q: Does a slower response time of the PT520A during testing mean my device is defective?

A: No. Variations in airflow, distance, angle, or gas movement can cause one detector to respond slightly sooner or later. This is normal, not a defect. For best results, keep the probe 1–5 cm from the leak point and move it slowly.

TOPTES PT520A gas detector stored in protective carrying case TOPTES PT520A gas detector stored in protective carrying case TOPTES PT520A gas detector stored in protective carrying case
TOPTES PT520A gas detector stored in protective carrying case

Click to download PT520A Manual

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Products

Gas Leak Detector

Electrical Testing Tools

Laser Level

Distance Measurement

Carbon Monoxide Detector

Company

About Us

Terms of  Service

intellectual property rights

Blog

Support

Track Your Order

Shipping  Policy

Return Policy

User Manuals

Contact Us

Email

Wholesale

Affiliate Program