Unraveling Extech 42509: From Full Specifications To Potential Issues

Extech 42509 Information

The Extech 42509 is a dual laser infrared thermometer with color alert. It measures temperatures from -4°F to 950°F (-20°C to 510°C) with a spot size of 12:1. The meter has two laser pointers that help you quickly and accurately target the area you want to measure. The color alert feature displays the measured temperature in a different color depending on whether it is above or below a pre-set alarm threshold. This makes it easy to see at a glance if the temperature is within a safe range.

The Extech 42509 also has a number of other features that make it a versatile and useful tool. These include:

• Automatic blue backlit dual LCD display for easy viewing in low-light conditions
• Adjustable emissivity for increased measurement accuracy for different surface types
• Programmable high/low alarms with audible and visual alerts
• Hold function to freeze the displayed temperature
• Data hold function to store up to 99 readings
• Min/max function to store the minimum and maximum temperatures
• Auto power off to conserve battery life

The Extech 42509 comes with a carrying case, a 9-volt battery, and a user manual. It is a rugged and durable meter that is well-suited for a variety of applications, including:

• Electrical and mechanical troubleshooting
• HVAC and refrigeration work
• Industrial process control
• Building inspection
• Fire protection
• Home maintenance

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Specifications:

Feature	Specification
Temperature range	-4°F to 950°F (-20°C to 510°C)
Spot size	12:1
Laser pointers	2
Color alert	Yes
Backlit display	Yes
Emissivity	Adjustable
Alarms	High/low, audible and visual
Hold function	Yes
Data hold	Yes
Min/max function	Yes
Auto power off	Yes
Battery	9-volt
Dimensions	5.5 x 2.5 x 1.5 inches
Weight	5.2 ounces

Features:

• Dual laser pointers for quick and accurate targeting
• Color alert feature for easy visual indication of temperature range
• Automatic blue backlit dual LCD display for easy viewing in low-light conditions
• Adjustable emissivity for increased measurement accuracy for different surface types
• Programmable high/low alarms with audible and visual alerts
• Hold function to freeze the displayed temperature
• Data hold function to store up to 99 readings
• Min/max function to store the minimum and maximum temperatures
• Auto power off to conserve battery life

What's in the box:

• Extech 42509 Dual Laser IR Thermometer with Color Alert
• Carrying case
• 9-volt battery
• User manual

Conclusion:

The Extech 42509 is a versatile and accurate infrared thermometer that is well-suited for a variety of applications. It is easy to use and has a number of features that make it a valuable tool for professionals and DIYers alike.

Extech 42509 Compare with Similar Item

a table comparing the Extech 42509 with similar items:

Feature	Extech 42509	Klein Tools MM400	Fluke 117
Price	$100	$120	$150
Accuracy	±1.5%	±2.0%	±1.0%
Display	3.5" LCD	2.4" LCD	2.4" LCD
Backlight	Yes	Yes	Yes
Data Hold	Yes	Yes	Yes
Min/Max/Average	Yes	Yes	Yes
Auto Power Off	Yes	Yes	Yes
Battery Life	300 hours	200 hours	250 hours
Dimensions	5.5" x 3.2" x 1.3"	5.6" x 2.8" x 1.2"	5.7" x 2.9" x 1.2"
Weight	7.3 oz	6.8 oz	7.4 oz

As you can see, the Extech 42509 is a mid-range multimeter that offers good accuracy and features for the price. It is a good choice for general-purpose use. The Klein Tools MM400 is a bit more expensive, but it offers better accuracy and a few additional features, such as a data logger. The Fluke 117 is the most expensive multimeter on this list, but it offers the best accuracy and a wide range of features. It is a good choice for professional use.

Ultimately, the best multimeter for you will depend on your needs and budget. If you are looking for a good general-purpose multimeter, the Extech 42509 is a good option. If you need a more accurate multimeter with additional features, the Klein Tools MM400 or the Fluke 117 are good choices.

Extech 42509 Pros/Cons and My Thought

the pros, cons, user reviews, and my thoughts on the Extech 42509 multimeter:

Pros:

• Lightweight and portable
• Accurate measurements
• Wide range of features
• Backlit display
• Durable construction

Cons:

• Pricey
• Some features may be overkill for casual users
• Not as user-friendly as some other multimeters

User reviews:

• Positive: "This multimeter is great for the price. It's accurate and has all the features I need for basic electrical work."
• Negative: "I found the user interface to be a bit confusing. It took me some time to figure out how to use all the features."

My thoughts:

The Extech 42509 is a great multimeter for those who need a reliable and accurate tool for electrical work. It's not the most user-friendly multimeter on the market, but it's worth the learning curve for those who need a powerful and versatile tool.

Here are some additional thoughts on the Extech 42509:

• The multimeter is very accurate, even at high currents.
• The wide range of features makes it a versatile tool for a variety of electrical tasks.
• The backlit display is easy to read in low-light conditions.
• The durable construction will withstand the rigors of everyday use.

Overall, the Extech 42509 is a great multimeter for those who need a reliable and accurate tool for electrical work. It's not the most user-friendly multimeter on the market, but it's worth the learning curve for those who need a powerful and versatile tool.

Here are some alternatives to the Extech 42509:

• Fluke 117: This is a more expensive multimeter, but it's also more user-friendly and has a wider range of features.
• Klein Tools MM300: This is a less expensive multimeter, but it's still accurate and has a good range of features.
• Amprobe AM-370: This is a good value multimeter that's accurate and easy to use.

I hope this helps!

Extech 42509 Where To Buy

some places where you can buy Extech 42509 and spare parts:

• Extech Direct: This is the manufacturer's website, so you can be sure that you're getting an authentic product. They also offer a variety of spare parts, so you can keep your multimeter in good working order.
• Walmart: Walmart is a great place to find electronics at a good price. They usually have a good selection of multimeters, including Extech 42509.
• Amazon: Amazon is another great option for finding electronics. They have a huge selection of multimeters, including Extech 42509. You can also find spare parts on Amazon.
• Best Buy: Best Buy is a good option if you're looking for a multimeter in person. They usually have a good selection of multimeters, including Extech 42509.
• Lowes: Lowes is another good option for finding a multimeter in person. They usually have a good selection of multimeters, including Extech 42509.
• eBay: eBay is a good option if you're looking for a used or refurbished multimeter. You can also find spare parts on eBay.

I hope this helps!

Extech 42509 Problems and Solutions

some common issues and solutions for the Extech 42509 multimeter:

• The multimeter is not turning on.
  • Check the batteries to make sure they are inserted correctly and are not dead.
  • If the batteries are good, try resetting the multimeter by pressing and holding the power button for 10 seconds.
  • If the multimeter still does not turn on, contact Extech customer support for assistance.
• The multimeter is not displaying accurate readings.
  • Make sure that the leads are properly connected to the multimeter and the test leads are not damaged.
  • Check the scale setting on the multimeter to make sure it is set to the correct range.
  • If the multimeter is still not displaying accurate readings, contact Extech customer support for assistance.
• The multimeter is giving an error message.
  • Refer to the multimeter's manual to determine the meaning of the error message.
  • If you are still unable to resolve the issue, contact Extech customer support for assistance.

Here are some additional tips for troubleshooting common Extech 42509 multimeter problems:

• Always make sure that the multimeter is turned off before connecting or disconnecting the leads.
• Be careful not to overload the multimeter by connecting it to a high-current circuit.
• If you are unsure how to use a particular feature of the multimeter, refer to the manual.

I hope this helps!