MESTEK CGD05A Rechargeable Gas Leak Detector with 11.3-Inch Probe

Inch: MESTEK CGD05A is a rechargeable combustible-gas detector with a flexible gooseneck probe for checking hard-to-reach locations. The listing describes visual, audible, and vibration alerts, a dual-format concentration display, and a 30-second startup calibration. It may suit targeted leak-checking, but it should not be treated as a substitute for a fixed household alarm or professional response to a suspected leak.

At a glance

The listing describes a flexible, 11.3-inch probe for reaching narrow or awkward locations.
The detector is claimed to cover natural gas, coal gas, and liquefied petroleum gas, with a methane-based range specification.
Visual, audible, and vibration alerts are described, with the audible alarm controllable by a mute key.
The display is described as providing digital and analog concentration readouts, with PPM/%LEL and temperature-unit switching.
USB-C charging and a stated 30-second automatic startup calibration support portable spot checks.

Price

$41.99Save 30%

Reference price: ~~$59.99~~

Price checked: Nov 14, 2026

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Pros and cons

Pros

The flexible probe can be bent to access spaces that are difficult to reach with a rigid handheld sensor.
Multiple alert types and a concentration display provide more than an audible-only indication.
The listing specifies USB-C charging and an included charging cable.

Cons

Startup requires a stated 30-second calibration period before use.
The detector is stated to shut down after about 10 minutes of inactivity unless that function is disabled.

Technical specifications

20 specifications

Identity
Brand	MESTEK
Model	CGD05A

Detection and display
Screen technology listed	LCD
Gas detection range	50-50000PPM/0-100%LEL (based on methane)
Gas resolution	1%LEL/1PPM
Measurement accuracy	<±%5LEL、<±500PPM
Response speed	2 seconds
Flexible metal hose length	11.3 inchs
Alarm type	Sound, vibrate, screen display
Operating temperature	0-50℃
Operating humidity	0-70%RH

Power and battery
Power configuration	USB-C Charging
Charging interface	USB Type-C
USB charging	5V/1A
Charging time	About 4h
Automatic shut-down	About 10 minutes
Calibration mode	Automatic calibration in 30 seconds after startup

Dimensions and installation
Dimensions listed	7.9"D x 1.5"W x 3.9"H
Weight listed	12.8 ounces

Materials and protection
Material listed	ABS

What to know before buying

Listing details to confirm

The listed range and accuracy are methane-based claims. The manufacturer states that the device cannot be operated while charging, and describes about four hours of charging time. Treat this handheld detector as a checking tool rather than an always-on alarm or a guarantee that an area is safe. Follow appropriate emergency procedures if a leak is suspected.

What’s in the box

Included

CGD05A gas leak detector (1)
Storage bag (1)
USB-C charging cable (1)
User manual

Who is it for?

A good fit for

Homeowners or RV users who want a handheld detector for checking suspected combustible-gas leak locations.
Technicians or inspectors who need a flexible probe and a displayed concentration reading for spot checks.

Less suited to

Buyers seeking a fixed, continuously operating household gas alarm.
Anyone needing an independently verified measurement instrument or a guaranteed determination that a space is safe.

MESTEK CGD05A Rechargeable Gas Leak Detector with 11.3-Inch Probe · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.2 / 5 · 2 ratings

5 stars60%60%
4 stars0%0%
3 stars40%40%
2 stars0%0%
1 star0%0%

The available aggregate ratings are based on only two ratings, with both five-star and three-star categories represented. That small, mixed sample offers little basis for judging reliability, ease of use, or detection performance, so buyers should weigh the stated probe, alarm, and operating details rather than treat the ratings as a settled consensus.

Frequently asked questions

Which gases does the listing say the CGD05A can detect?

It lists natural gas, coal gas, and liquefied petroleum gas. The stated detection range is based on methane, so do not assume the same range or accuracy for every gas.

How long is the probe?

The listing specifies an 11.3-inch flexible metal hose that can be bent to reach difficult areas.

Does the detector alarm in more than one way?

Yes. The listing describes sound, vibration, and screen alerts when the detected value is above 10%LEL. It also says the audible alarm can be muted.

Can it be used while charging?

The listing says the detector automatically shuts down during charging and can be used after charging is complete or stopped.