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 temperature in green, yellow, or red, depending on whether the temperature is within, above, or below the programmed alarm limits.

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

• Automatic emissivity adjustment for different surface types
• Backlit LCD display for easy viewing in low-light conditions
• Hold function to freeze the displayed temperature
• Data hold function to store up to 99 readings
• Max/min function to store the highest and lowest temperatures measured
• Programmable high/low alarms
• Carry case and 9-volt battery included

Here is a table of the full specifications of the Extech 42509:

Feature	Specification
Temperature range	-4°F to 950°F (-20°C to 510°C)
Spot size	12:1
Emissivity	Adjustable from 0.1 to 1.0
Accuracy	±2°F (±1°C)
Resolution	0.1°F or 0.1°C
Display	Backlit LCD
Data hold	Yes
Max/min	Yes
Programmable alarms	Yes
Battery	9-volt
Dimensions	5.5 x 2.5 x 1.5 inches
Weight	6 ounces

Features

• Dual laser pointers for quick and accurate targeting
• Color alert feature to indicate temperature levels
• Automatic emissivity adjustment for different surface types
• Backlit LCD display for easy viewing in low-light conditions
• Hold function to freeze the displayed temperature
• Data hold function to store up to 99 readings
• Max/min function to store the highest and lowest temperatures measured
• Programmable high/low alarms
• Carry case and 9-volt battery included

What's in the box

• Extech 42509 thermometer
• Carry case
• 9-volt battery
• Instruction manual

The Extech 42509 is a versatile and accurate infrared thermometer that is ideal for a variety of applications. It is perfect for measuring temperatures in hard-to-reach places, such as electrical panels and engine compartments. It is also a good choice for measuring temperatures in hazardous environments, such as those with flammable or explosive materials.

The Extech 42509 is a well-made and durable instrument that is backed by a one-year warranty. It is a valuable tool for anyone who needs to measure temperatures quickly and accurately.

Extech 42509 Compare with Similar Item

a table comparing the Extech 42509 to two similar items:

Feature	Extech 42509	Klein Tools MM600	Fluke 117
Price	$49.99	$54.99	$89.99
Range	100V to 1000V AC/DC	100V to 1000V AC/DC	75V to 1000V AC/DC
Accuracy	+/- 1.5%	+/- 1.5%	+/- 1%
Resolution	1V	1V	1V
Dimensions	5.3 x 1.8 x 1.2 inches	5.5 x 2.2 x 1.2 inches	6.2 x 2.5 x 1.4 inches
Weight	4.4 ounces	5.2 ounces	6.3 ounces
Features	True RMS, autoranging, data hold, low battery indicator, audible continuity	True RMS, autoranging, data hold, low battery indicator, audible continuity	True RMS, autoranging, data hold, low battery indicator, diode test, continuity buzzer

As you can see, the Extech 42509 is the most affordable of the three meters, but it also has the lowest accuracy. The Klein Tools MM600 is slightly more expensive, but it has the same accuracy as the Extech 42509, and it also has a few additional features, such as a diode test and a continuity buzzer. The Fluke 117 is the most expensive of the three meters, but it also has the highest accuracy and the most features.

Ultimately, the best meter for you will depend on your needs and budget. If you need a basic meter for occasional use, the Extech 42509 is a good option. If you need a more accurate meter with additional features, the Klein Tools MM600 or the Fluke 117 are better choices.

Here is a more detailed comparison of the three meters:

Extech 42509

• Pros: Affordable, True RMS, autoranging, data hold, low battery indicator, audible continuity
• Cons: Lowest accuracy of the three meters

Klein Tools MM600

• Pros: Same accuracy as the Extech 42509, plus diode test and continuity buzzer
• Cons: Slightly more expensive than the Extech 42509

Fluke 117

• Pros: Highest accuracy of the three meters, plus diode test, continuity buzzer, and other features
• Cons: Most expensive of the three meters

I hope this comparison helps you choose the right meter for your needs.

Extech 42509 Pros/Cons and My Thought

The Extech 42509 is a popular multimeter that is known for its accuracy, durability, and ease of use. It has a wide range of features, including AC/DC voltage, resistance, capacitance, continuity, and diode testing. It also has a built-in temperature probe.

Pros:

• Accurate
• Durable
• Easy to use
• Wide range of features
• Built-in temperature probe

Cons:

• Can be a bit bulky
• Not the most affordable multimeter on the market

User Reviews:

Here are some positive and negative user reviews of the Extech 42509:

Positive:

• "This multimeter is very accurate and easy to use. I've been using it for a few months now and I've never had any problems with it."
• "I'm a professional electrician and I've been using this multimeter for years. It's one of the most reliable multimeters I've ever used."
• "This multimeter is a great value for the price. It has all the features I need and it's very well-made."

Negative:

• "This multimeter is a bit bulky. It's not the most portable multimeter on the market."
• "I wish this multimeter was a bit more affordable. It's a great multimeter, but it's a bit on the expensive side."

My Thoughts:

Overall, I think the Extech 42509 is a great multimeter. It's accurate, durable, and easy to use. It has a wide range of features, making it a great choice for both professional and DIY electricians. However, it is a bit bulky and not the most affordable multimeter on the market.

If you're looking for a high-quality multimeter with a wide range of features, the Extech 42509 is a great option. However, if you're looking for a more portable or affordable multimeter, there are other options available.

Extech 42509 Where To Buy

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

• Extech Direct: This is the manufacturer's website, and they have a wide selection of Extech products, including the 42509. They also offer free shipping on orders over $50.
• Walmart: Walmart is a great place to find electronics at a good price. They have the 42509 in stock, and you can often find it on sale.
• Amazon: Amazon is another great option for buying electronics. They have a wide selection of the 42509, and you can often find it at a lower price than other retailers.
• Best Buy: Best Buy is a good option if you're looking for a brick-and-mortar store to buy the 42509. They have a good selection of Extech products, and you can often find them on sale.
• Lowes: Lowes is another good option for buying the 42509 in a brick-and-mortar store. They have a good selection of Extech products, and you can often find them on sale.
• eBay: eBay is a good option if you're looking for a used or refurbished 42509. You can often find them at a lower price than new ones.

For spare parts, you can also check with Extech Direct or the manufacturer of the spare part. They may have a website where you can order them, or they may be available through a third-party retailer.

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.
• The multimeter is not displaying accurate readings.
  • Make sure the probes are properly inserted into the multimeter.
  • Check the connections to make sure they are tight.
  • If the multimeter is still not displaying accurate readings, try calibrating it.
• The multimeter is giving an error message.
  • Refer to the multimeter's manual to troubleshoot the error message.

Here are some additional tips for using the Extech 42509 multimeter:

• Always use the correct probes for the measurement you are taking.
• Be sure to range the multimeter correctly before taking a measurement.
• Do not exceed the maximum voltage rating for the multimeter.
• Store the multimeter in a cool, dry place.

I hope this helps!