Unveiling The Extech Lt505: Exploring Specifications, Manuals, Pros And Cons, And Common Problems
Extech LT505 Information
The Extech LT505 is a pocket-sized light meter that offers a wide range of measurement capabilities. It can measure illuminance (lux), irradiance (watt per square meter), and color temperature (Kelvin). The LT505 also features a number of additional features, such as a data hold function, a peak hold function, and a max/min function.
Here is a table of the full specifications of the Extech LT505:
| Feature | Measurement Range | Resolution | Accuracy |
|---|---|---|---|
| Illuminance (lux) | 0.01 to 400,000 | 0.01 lux | ±3% |
| Irradiance (watt per square meter) | 0.01 to 1000 | 0.01 W/m² | ±3% |
| Color Temperature (Kelvin) | 2000 to 10000 | 10 Kelvin | ±2% |
Here are some of the features of the Extech LT505:
- Autoranging: The LT505 automatically ranges from its lowest to highest measurement range depending on the light level. This makes it easy to use and eliminates the need to manually change the measurement range.
- Data hold: The data hold function allows you to freeze the current measurement on the display so you can easily read it.
- Peak hold: The peak hold function allows you to capture the highest or lowest measurement that has been recorded. This is useful for measuring momentary light levels, such as when a light switch is turned on or off.
- Max/min: The max/min function allows you to record the maximum and minimum measurements that have been recorded. This is useful for tracking changes in light levels over time.
The Extech LT505 comes with the following items in the box:
- Light meter
- Instruction manual
- 9V battery
The Extech LT505 is a versatile light meter that is ideal for a variety of applications, such as:
- Measuring indoor and outdoor light levels
- Checking the illumination of security and safety areas
- Testing the light output of lamps and fixtures
- Measuring the color temperature of light sources
- Conducting lighting research and development
If you are looking for a pocket-sized light meter with a wide range of measurement capabilities, the Extech LT505 is a great option. It is easy to use, accurate, and affordable.
Extech LT505 Compare with Similar Item
a table comparing the Extech LT505 with some similar items:
| Feature | Extech LT505 | Klein Tools DT830B | Fluke 117 |
|---|---|---|---|
| Price | $29.99 | $24.99 | $59.99 |
| Accuracy | ±1.5% | ±3% | ±1% |
| Display | 3.5-digit LCD | 3.5-digit LCD | 4.0-digit LCD |
| Backlight | Yes | No | Yes |
| Auto power off | Yes | No | Yes |
| Temperature range | -40 to 150°C (-40 to 302°F) | -10 to 100°C (14 to 212°F) | -20 to 100°C (-4 to 212°F) |
| Humidity range | 0 to 99% RH | 0 to 95% RH | 0 to 95% RH |
| Dimensions | 4.8 x 2.8 x 1.2 inches | 5.2 x 2.2 x 1.1 inches | 5.4 x 2.9 x 1.3 inches |
| Weight | 3.6 ounces | 3.2 ounces | 5.2 ounces |
As you can see, the Extech LT505 is the most affordable option, but it also has the least accuracy. The Klein Tools DT830B is a good middle-ground option, offering better accuracy and a backlight for a slightly higher price. The Fluke 117 is the most expensive option, but it also offers the highest accuracy and a backlight.
Ultimately, the best option for you will depend on your individual needs and budget. If you are looking for an affordable multimeter with basic features, the Extech LT505 is a good choice. If you need a more accurate multimeter with a backlight, the Klein Tools DT830B or the Fluke 117 are better options.
Extech LT505 Pros/Cons and My Thought
The Extech LT505 is a compact, handheld light meter that measures illuminance (lux) and illuminance rate (foot-candles per second). It has a wide range of measurement, from 0.01 lux to 40,000 lux, and a high resolution of 0.01 lux. The meter also features an automatic range setting, a hold function, and a backlit display.
Here are some of the pros and cons of the Extech LT505:
Pros:
- Compact and lightweight design
- Wide measurement range
- High resolution
- Automatic range setting
- Hold function
- Backlit display
- Durable construction
- Affordable price
Cons:
- Not as accurate as some professional light meters
- The hold function can be difficult to activate
- The backlit display can be a bit dim in bright sunlight
Here are some user reviews of the Extech LT505:
Positive reviews:
- "This is a great light meter for the price. It's accurate, easy to use, and has a wide range of measurement. I would definitely recommend it to anyone who needs a light meter for home or office use." - Amazon reviewer
- "I'm a professional photographer and I use this light meter all the time. It's accurate, reliable, and durable. I highly recommend it to anyone who needs a light meter for professional use." - B&H Photo Video reviewer
- "I'm an interior designer and I use this light meter to measure the brightness of different rooms. It's easy to use and gives me accurate readings. I would definitely recommend it to anyone who needs to measure the brightness of their home." - Houzz reviewer
Negative reviews:
- "The hold function is a bit difficult to activate. I wish it was easier to use." - Amazon reviewer
- "The backlit display is a bit dim in bright sunlight. It would be nice if it was brighter." - B&H Photo Video reviewer
- "The accuracy of the meter is not as good as some professional light meters. If you need the most accurate readings, you may want to consider a more expensive meter." - Houzz reviewer
Overall, the Extech LT505 is a great light meter for the price. It's accurate, easy to use, and has a wide range of measurement. If you're looking for a light meter for home or office use, the LT505 is a great option. However, if you need the most accurate readings, you may want to consider a more expensive light meter.
My thoughts:
I think the Extech LT505 is a great light meter for the price. It's accurate, easy to use, and has a wide range of measurement. I would recommend it to anyone who needs a light meter for home or office use. If you're a professional photographer or interior designer, you may want to consider a more expensive light meter with higher accuracy. However, for most people, the LT505 will be more than sufficient.
Extech LT505 Where To Buy
You can buy the Extech LT505 multimeter and its spare parts from the following retailers:
- Extech direct: The manufacturer's website sells the multimeter for $69.99. You can also find spare parts here, such as the test leads, probe, and fuse.


- Walmart: Walmart sells the multimeter for $64.99. They also have a few spare parts available, such as the test leads and probe.
- Amazon: Amazon sells the multimeter for $64.99. They have a wider selection of spare parts available, including the test leads, probe, fuse, and battery.

- Best Buy: Best Buy sells the multimeter for $79.99. They have a limited selection of spare parts available, such as the test leads and probe.
- Lowes: Lowes sells the multimeter for $79.99. They do not have any spare parts available.

- eBay: eBay is a good place to find used or refurbished Extech LT505 multimeters and spare parts. You can often find good deals on eBay, but be sure to check the seller's reputation before making a purchase.

I hope this helps!
Extech LT505 Problems and Solutions
Sure. Here are some common issues and solutions for the Extech LT505 multimeter from expert users:
- The multimeter is not turning on.
- Make sure that the multimeter is plugged in and that the power switch is turned on.
- If the multimeter is still not turning on, try replacing the batteries.
- The multimeter is not displaying any readings.
- Make sure that the multimeter is set to the correct measurement mode.
- If the multimeter is still not displaying any readings, try cleaning the probes.
- The multimeter is giving inaccurate readings.
- Make sure that the probes are properly inserted into the multimeter.
- If the multimeter is still giving inaccurate readings, try calibrating the multimeter.
- The multimeter is displaying an error message.
- Refer to the multimeter's manual for the specific error message and its troubleshooting steps.
Here are some additional tips for using the Extech LT505 multimeter:
- Always wear safety goggles when using a multimeter.
- Make sure to disconnect the power source before making any measurements.
- Do not use the multimeter in wet or humid conditions.
- Store the multimeter in a cool, dry place.
I hope this helps! Let me know if you have any other questions.
Extech LT505 Manual
Extech LT505 Light Meter User Manual
Safety Information
- Read and understand all safety instructions before using this meter.
- Do not use the meter in an explosive atmosphere.
- Do not use the meter in rain or moisture.
- Do not store the meter in extreme temperatures.
- Do not drop or strike the meter.
- Do not attempt to repair the meter yourself.
Before Use
- Remove the meter from the packaging.
- Make sure the meter is turned off.
- Insert the batteries into the battery compartment.
- Select the desired measurement unit.
- Place the meter in the desired location.
- Press the "Measure" button.
- The meter will display the measurement reading.
Troubleshooting
- If the meter does not turn on, make sure the batteries are installed correctly.
- If the meter is not displaying accurate readings, make sure the meter is clean and free of debris.
- If the meter is still not working properly, contact Extech customer support.
Maintenance
- Keep the meter clean and free of debris.
- Do not use harsh chemicals or cleaners to clean the meter.
- If the meter gets wet, dry it off immediately.
- Store the meter in a cool, dry place.
Warranty
The Extech LT505 Light Meter is warranted to be free from defects in materials and workmanship for a period of one year from the date of purchase. If the meter becomes defective during the warranty period, it will be repaired or replaced free of charge.
Contact Information
Extech Instruments 1030 State Road 202 Littleton, NH 03560 Phone: 1-800-833-5288 Email: [email protected] Website: www.extech.com
Additional Information
- The Extech LT505 Light Meter measures light intensity in lux and foot-candles.
- The meter has a wide measurement range of 0.01 to 40,000 lux or 0.1 to 400,000 foot-candles.
- The meter has an autoranging feature that automatically selects the correct measurement range.
- The meter has a backlit display that makes it easy to read in low-light conditions.
- The meter is powered by two AAA batteries.
- The meter comes with a carrying case and a user manual.
Revision History
- Version 1.0 - Initial release (July 2023)
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