Best Toptes in 2025

【Combustible Gas Leak Detector】The TopTes PT199 is suitable for LPG, methane, ethane, propane, butane, natural gas, coal gas, gas fuel, liquefied natural gas, etc., and it will exactly pinpoint a leak, reducing the risk of gas explosion and keeping your family and property safe

【Visual & Audio Gas Alarm】The gas detector employs both visual alarm and audible alarm as fast as 0.5 seconds of detection. When the bar graph increases and the detector beeps, you know gas has been detected. The alarm increases with the amount of gas, and the LCD screen will turn red when the gas concentration is high

【Batteries Included & Easy to Use】The TopTes PT199 comes with 2x AAA Alkaline Batteries, so you will be able to set the detector up and have it ready as soon as you receive it. The system warm-up time is about 30 seconds. The low battery indicator will engage when battery voltage is below 2.4V. Automatic power off after 5 minutes without operation or gas detection

【Effective Gas Leak Detector】TOPTES PT520A natural gas detector can accurately help you locate the gas leakage of various combustible gases in tight spaces, such as methane, natural gas, propane, LPG, gasoline, etc. *Note: Please allow 30 seconds of warm-up time before the operation

【Flexible Probe Easy to Use】With a 17-inch flexible gooseneck( bendable in any direction), the portable gas leak detector makes it easy for you to access hard-to-reach areas, such as natural gas pipelines, propane storage tanks, gas fireplaces, sewers, basement, RV, and other narrow space. It can be carried anywhere to find leaks no matter outdoors or indoors

【Visual & Audible Alarm】 PT520A will rapidly respond in 0.5 seconds while gas is detected. Seven colored analog bars and a 75dB audible buzzer help you point out the gas leak location. Both of them increase with combustible gas concentration. Detection range: 50 to 10,000 ppm (*based on Methane)

【Combustible Gas Leak Detector】 TOPTES PT177 is a useful little tool that helps every household who has gas appliances to quickly and easily pinpoint leakage of combustible gas including LPG, methane, ethane, propane, butane, natural gas, coal gas, gas fuel, liquefied natural gas, etc. It will save a ton of time and potentially reduce energy bills

【Easy to Use, Visual & Audible Alarm】 All you have to do is load the provided batteries, let PT177 gas detector finish its 30-second automatic calibration process, and then point near where you suspect the leak to be (hold it a couple of centimeters away). PT177 detects gasses and alarms almost immediately within 0.5 to 3 seconds. Five red LEDs (visual) and 75dB audible alerts that increase with gas concentration

【Compact Design】 Pocket-sized with a pocket clip that allows you to carry it in your shirt pocket. The included storage bag makes the natural gas detector easy to store. It is an excellent tool for RV-ers, DIY-ers, homeowners with gas appliances, etc. It's very convenient and perfect for regular safety checks

【High & Low sensitivity Mode】The TopTes PT210 gas leak detector has dual mode detection (high sensitivity and low sensitivity). After a warm-up time of 30-45 seconds, the gas detector enters a high sensitivity mode (range: 50 to 500 ppm), which can quickly identify the source of gas leaks in just 0.5 seconds. Detects combustible gases such as propane, methane, natural gas, coal gas, gasoline, LPG, LNG, etc.

【Portable Design & Broad application】 This pen-style gas detector design can be carried easily in your pocket and used in a wide variety of environments to track a gas leak from a kitchen gas stove, water heater, natural gas heating system, RV propane tanks, factory gas pipelines, and other similar applications. It can save you hundreds in diagnostic fees from technicians

【Visual & Audible Alarm】 This gas sniffer will provide visual and audible alarms if any combustible gas is detected. There is a continuous alarm at a tone of 75 dB and the LCD light turns red. The LCD display with a green backlight ensures clear visibility even in dim light conditions

【Decibel Meter with A/C Weighting】 TopTes TS-501B decibel meter uses a precise condenser microphone to capture sound. It’s equipped with A-weighting and C-weighting facilities that measure noise levels from 30 to 130 dB with an accuracy of ±1.5 dB, Frequency from 30 to 8,000Hz. Perfect for monitoring noise levels in communities, home theaters, audio systems, automobiles, workshops, schools, offices, factories

【2.25-inch LCD Screen with Backlight】 This TS-501B sound level meter is measured noise levels are expressed in decibels (dB) and displayed on the 2.25-inch LCD screen, it easy to read on a big display design. Long press the backlight button to turn on a backlight, making it easy to view even in damn light

【MAX/MIN Measurement, Date Hold】 The sound pressure level (SPL) meter has Max or Min measurement values to represent the maximum/minimum (high/low peak) value of the sound produced within a certain time, and the data hold function can freeze the current reading based on the sound measurement according to individual needs

【Combustible Gas Leak Detector】 TOPTES PT177 is a useful little tool that helps every household who has gas appliances to quickly and easily pinpoint leakage of combustible gas including LPG, methane, ethane, propane, butane, natural gas, coal gas, gas fuel, liquefied natural gas, etc. It will save a ton of time and potentially reduce energy bills

【Easy to Use, Visual & Audible Alarm】 All you have to do is load the provided batteries, let PT177 gas detector finish its 30-second automatic calibration process, and then point near where you suspect the leak to be (hold it a couple of centimeters away). PT177 detects gasses and alarms almost immediately within 0.5 to 3 seconds. Five red LEDs (visual) and 75dB audible alerts that increase with gas concentration

【Compact Design】 Pocket-sized with a pocket clip that allows you to carry it in your shirt pocket. The included storage bag makes the natural gas detector easy to store. It is an excellent tool for RV-ers, DIY-ers, homeowners with gas appliances, etc. It's very convenient and perfect for regular safety checks

[Handy Combustible Gas Leak Detector] TopTes PT330 gas detector helps you to accurately detect and locate combustible gas leaks like LPG, LNG, methane, ethane, propane, butane, natural gas, coal gas, gas fuel, etc. *Note: Please allow 30 seconds of warm-up time before the operation

[Easy to Read, Big LCD Screen] TopTes PT330 adopts user-friendly 2.26inch LCD tricolor screen, where you could easily get the readings. You could exactly pinpoint gas leaks in gas stove, gas dryer, gas water heater, gas oven, camping cooker, or gas tank. It could reduce the risk of gas explosion and keep your family and property safe. Detection range: 50 to 10,000 ppm* (*based on Methane)

[Quick Response, Visual & Audible Alarm] With an excellent semiconductor, TopTes PT330 could react with the leaks within 0.5 to 3 seconds. Three-color backlight screen displays the current gas concentration, green to low, orange to medium, and red to high. The leaks could be easily pinpointed since the bar graphs and beep sounds will increase as the gas concentration increases.

【Easy to Read with Large LCD Screen】 This wood moisture meter is easy to get an accurate reading from the surface of materials and displays accurate moisture readings on the 2.25" big screen. Use this handheld meter to check the moisture content in firewood or drywall, it can stand up on the table, the moisture content is displayed with a bar graph and percentage (_%RH) on the screen. Date Hold and Max/Min function is used to freezes readings, useful for writing down data

【Tricolor Backlight Display, Easy to Use】 TopTes Moisture Meter TS-630 features an HD tri-color backlight to easily know if the wood/wall humidity is Dry, Moist, or Wet. Green backlight for Low moisture, orange backlight for middle moisture, and red moisture for high moisture. After selecting the mode, and putting pins into the firewood, easy and quick to get a visible alert from the clear screen

【7 Calibration Scales, 2 Material Mode】It is designed with built-in characteristic parameters of 7 calibration scales for wood and building material, ranging from 0.0% to 57%. This humidity meter is perfect for woodworking, water damage restoration, building construction, and home renovation. Easily Check and test suspicious water leaks around the wall/floor so you can quickly determine what level of remediation is needed

2-in-1 Detection - Smoke & carbon monoxide detector combo alerts you to both smoke & fire events as well as poisonous, CO gas in a single device

24/7 Self-testing components are always checking the device to ensure it's operating as expected (not a substitute for a manual push test)

Easy installation mounting bracket included for quick installation in 4 orientations

Keep your family safe with this battery operated smoke and carbon monoxide alarm; Battery powered alarms provide continuous monitoring of CO levels, even if there's a power failure

Features an electrochemical carbon monoxide sensing technology as well as a photoelectric sensor that detects the larger particles of a smoldering fire

Indicator lights on the face of the unit display the presence of smoke or carbon monoxide, while an 85 decibel siren provides a clear, loud warning upon detection

2-in-1 Detection - Smoke & carbon monoxide detector combo alerts you to both smoke & fire events as well as poisonous, CO gas in a single device

24/7 Self-testing components are always checking the device to ensure it's operating as expected (not a substitute for a manual push test)

Easy installation mounting bracket included for quick installation in 4 orientations

Keep your family safe from carbon monoxide in multiple rooms with this convenient plug in carbon monoxide alarm 3 pack; The alarms work with any standard outlet and also have a battery backup for continuous monitoring of CO levels, even if there's a power failure

Features an advanced electrochemical carbon monoxide sensor that accurately detects carbon monoxide levels, no matter where the detector is placed in the room

Simple to use, with a single test/silence button; A loud 85 decibel alarm sounds when Carbon Monoxide levels reach dangerous levels

Easy to install CO and explosive gas alarm with three convenient mounting options including AC wall outlet, plugin six foot power cord, or table top

Carbon Monoxide (CO) alarms four quick beeps, followed by five seconds of silence, followed by four quick beeps. Displays CO concentration

Gas alarms one second of alarm on, one second of alarm off, repeating with “GAS” shown in display

Smoke detector and carbon monoxide detector that speaks up in a friendly voice to give you an early warning when there’s smoke or CO in your home

Split Spectrum Sensor looks for both fast burning and smoldering fires and tells you where the danger is

Get phone alerts so you know something’s wrong, even when you’re away from home [1]

2-in-1 Protection: The combination smoke and CO detector detects both smoke and carbon monoxide faster and more accurately using a photoelectric smoke sensor and an electrochemical CO sensor

10-Year Battery: The fire and CO alarm is built with a sealed lithium battery that provides 10 years of continuous power, saving you from changing batteries and power outage

Combination Alarm with CO Readings: The informative LCD will show you the battery level and real-time CO levels in PPM (parts per million)

Smoke detector carbon monoxide detector combo – sounds loud 85 decibel alarm with voice alerts that announce "Fire! Fire!" or "Warning! Carbon Monoxide!"

Hardwired with backup battery - combo smoke and carbon monoxide detector is hardwired into a 120V power source with 9V battery backup

Easy installation – battery door is on the front for quick replacement

style: flush mount; color: white

loud 85 db alarm

power supply and current draw: 12 vdc 90ma @ 12 vdc

Power Supply and Current Draw: 12 vDC 90mA @ 12 vDC

Alarm Point: < 25% LEL of Propane

Operational Range: 12vDC +/- 15%

Double-Duty Alarm Detects Both Gas Leaks And Co Gas Simultaneously

Reliable 12V Power Means No Missing Or Dead Batteries To Replace. Operating Temperature: minus 40° F To plus 158° F

Flush Mount

Includes mounting bracket

Power Supply and Current Draw: 12 vDC 75mA @ 12 vDC

Alarm Point: < 25% LEL of Propane and Methane

12 Pack of hardwired combination alarms features highly accurate electrochemical and photoelectric sensors to detect both Carbon monoxide and smoke hazards

Exclusive voice warning identifies both the location and the Type of danger (smoke or co)

Interconnects to up to (18) alarms, (12) of which can be smoke alarms

2-in-1 Detection - Smoke & carbon monoxide detector combo alerts you to both smoke & fire events as well as poisonous, CO gas in a single device

Photoelectric sensor detects visible fire particles associated with slow, smoldering fires, while the electrochemical sensor detects carbon monoxide

An 85-decibel alarm sounds & a red LED indicates the smoke detector is sensing smoke or fire

2-in-1 Detection - Smoke & carbon monoxide detector combo alerts you to both smoke & fire events as well as poisonous, CO gas in a single device

Photoelectric sensor detects visible fire particles associated with slow, smoldering fires, while the electrochemical sensor detects carbon monoxide

An 85-decibel alarm sounds & a red LED indicates the smoke detector is sensing smoke or fire

Battery-operated smoke and carbon monoxide alarm

Connects multiple alarms together for wireless safety network

Voice alarm gives clear indication of where the problem is located

double-duty alarm detects both gas leaks and co gas simultaneously

reliable 12v power means no missing or dead batteries to replace

flush mount

FIRST OF ITS KIND: The first battery-operated, digital radon detector. Monitor your home without the need for an outlet.

LONG TERM MONITORING: Monitor for cancer-causing radon gas. Long term monitoring is necessary as radon levels fluctuate daily.

BE IN CONTROL: Take action if your radon levels are high. Know if your improvements have worked by checking the short term, on-screen readings.

【Combustible Gas Leak Detector】The TopTes PT199 is suitable for LPG, methane, ethane, propane, butane, natural gas, coal gas, gas fuel, liquefied natural gas, etc., and it will exactly pinpoint a leak, reducing the risk of gas explosion and keeping your family and property safe

【Visual & Audio Gas Alarm】The gas detector employs both visual alarm and audible alarm as fast as 0.5 seconds of detection. When the bar graph increases and the detector beeps, you know gas has been detected. The alarm increases with the amount of gas, and the LCD screen will turn red when the gas concentration is high

【Batteries Included & Easy to Use】The TopTes PT199 comes with 2x AAA Alkaline Batteries, so you will be able to set the detector up and have it ready as soon as you receive it. The system warm-up time is about 30 seconds. The low battery indicator will engage when battery voltage is below 2.4V. Automatic power off after 5 minutes without operation or gas detection

Keep your family safe with this digital display, plug in carbon monoxide alarm; It works with any standard outlet and also has a battery backup for continuous monitoring of Carbon Monoxide levels, even if there's a power failure

Features an advanced electrochemical carbon monoxide sensor; Peak level feature displays the highest concentration of carbon monoxide measured

A loud 85 decibel alarm sounds when Carbon Monoxide levels reach dangerous levels

HIGHLY RESPONSIVE GAS SENSOR – PANGAEA RV gas detectors use highly-sensitive semiconductors to provide faster, more accurate response times to gas exposure, so you can make a smarter, safer choice for your travelers.

REAL-TIME DIGITAL DISPLAY – This gas detector for RV use features a digital screen that shows real-time concentrations and error codes which allows it to replace other models like the MTI Safe-T-Alert 20, 30, 40, and CCI control series.

LOUD, AUDIBLE ALARM SYSTEM – Along with a test/reset button that lets you test and silence unwanted triggering our gas detector propane system produces an easy-to-hear alarm, so you can respond quickly even in the middle of night.

RF Interlinked: These alarms use wireless radio frequency technology to both transmit and receive messages regarding hazards in the home so that when one alarm sounds, they all do, informing everyone of the emergency

2-in-1 Protection: This combination alarm is equipped with dual sensors to detect both smoke and CO dangers in a single unit, providing instant warning through its loud 85 dB sound

10-Year Sensor Life: The durable and long-lasting design ensures 10 years of stable, reliable performance for complete peace of mind, keeping your home and family safe for a decade