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Extech HD450 Datalogging Heavy Duty Light Meter Includes Windows software and USB cable (view larger). Offering automatic datalogging, the Extech HD450 light meter automatically stores up to 16,000 readings or manually store/recall up to 99 readings. It features a large backlit LCD display with a 40-segment bar graph, has a wide range to 40,000Fc or 400,000 Lux, and reads cosine and color corrected measurements. The HD450 utilizes precision silicon photo diode and the spectral response filter and has the handy backlight for readings in low light level areas. The peak mode (10S) captures the highest readings and the relative mode indicates the change in the light levels.This meter offers minimum/maximum reading, a data hold function that freezes the display, a heavy duty rugged double molded housing, and a light sensor with a 3-foot (1-meter) cable. You can connect the HD450 to a Windows-powered PC via the included USB cable to download readings to the included software. The HD450 measures 6.7 x 3.1 x 1.6 inches (HxWxD), weighs 13.7 ounces, and is powered by a single 9-volt battery. It. What's in the Box HD450 Datalogging Heavy Duty Light Meter, light sensor with 3-foot cable and protective cover, USB cable, Windows datalogging software, hard carrying case, 9-volt battery, operating instructions
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Includes Windows software and USB cable
(view larger).
Offering automatic datalogging, the Extech HD450 light meter automatically stores up to 16,000 readings or manually store/recall up to 99 readings. It features a large backlit LCD display with a 40-segment bar graph, has a wide range to 40,000Fc or 400,000 Lux, and reads cosine and color corrected measurements.
The HD450 utilizes precision silicon photo diode and the spectral response filter and has the handy backlight for readings in low light level areas. The peak mode (10S) captures the highest readings and the relative mode indicates the change in the light levels. This meter offers minimum/maximum reading, a data hold function that freezes the display, a heavy duty rugged double molded housing, and a light sensor with a 3-foot (1-meter) cable.
You can connect the HD450 to a Windows-powered PC via the included USB cable to download readings to the included software. The HD450 measures 6.7 x 3.1 x 1.6 inches (HxWxD), weighs 13.7 ounces, and is powered by a single 9-volt battery. It's backed by a three-year limited warranty.
What's in the Box
HD450 Datalogging Heavy Duty Light Meter, light sensor with 3-foot cable and protective cover, USB cable, Windows datalogging software, hard carrying case, 9-volt battery, operating instructions
Hesham Elbadrawy
2025-08-27 10:09:28
Great product and good price. I use it for light studies. The software is very useful and easy to use
Carlos
2025-08-25 15:35:55
Software was not included in the package.
Don F.
2025-08-22 09:40:17
meter works great biggest complaint is that it does not AC power adapter to use for long periods over 24 hours. I used rechargeable batteries to give more life.
Andrew B
2025-08-06 16:02:44
This is a well made meter with some nice features for a reasonable price. The data logging is good for unattended recording. The button push memory capacity is great if you need to record multiple readings but can't write them down as you go...like floating in a swimming pool:) The things we do for a living! Put it in a shallow plastic tub (oil drain tub), lay a towel in it to absorb any water that splashes, seal the meter (not the head) in a zip-lock baggie, throw on a floatation vest, and get paid to go for a swim! The software is pretty basic and hasn't been updated since 2007, but it works for what it is supposed to do, I am currently on Windows 7 and it works fine.
Raleigh Littles
2025-07-18 12:24:11
I needed to use this on a Linux computer, and even though it's a simple serial device ("Silicon Labs CP210x UART Bridge"), I can't communicate it because the manual doesn't include info about the serial interface (baud rate at the minimum would be nice...). The manual only points you to use their software, which is Windows only.
Melanee Euless
2025-05-08 16:59:11
main cable connection to meter after a few times using unit, with disconnecting and reconnection for the day's we used it. the connection became bad and unit stopped reading. unit failed on second floor we just had started out of a total of 5 floors similar we still needed to do. we had another one that is starting to act up (we purchased unit near same time we got this one. we had to barrow the General contractors to finish. Amazon said i couldn't get it repaired or replaced, our time limit was up so we just spent a few hundred dollars on a tool that should have lasted much longer. we really took good care of it as well.
Clay Melugin
2025-04-15 16:48:56
Works well, easy to use
Juan
2025-03-30 12:59:27
Works OK on the field with an accurate results, but even I tried and tried, It never works together with the PC.
Dorsetman
2025-03-13 16:06:32
Being used to calculate total sunlight over a period of time on a large African farm. Records data at anything between 2 and 99 second intervals which can then be downloaded to a PC for later analysis. Can also measure max and min levels as well as instantaneous measurements. Seems a very useful piece of kit.
Eva Badillo
2025-02-11 13:05:00
El equipo está bien, pero no me gusto que no le facturaron
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