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led display digit

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led display digit Customers Reviews

  • Nice 4 digit display.

    posted by DrJFM

    Only takes 2 wires to use. Mine was a Catalex as shown. Had seen some complaints about these devices from various sources, but no problems with this one.Used: http://www.seeedstudio.com/wiki/Grove_-_4-Digit_Display for trial sketchs and nice timer routine too.
    Surprised how accurate a clock you get with just the UNO crystal and no correction. Wanted to do something each day at a time +/- a couple of min.If I have to adjust the "clock" once a week, no big deal.
    Ordered a couple more! Will try w ATTiny.
  • Great Voltmeter!

    posted by michalwu

    Small boardVery good solder -high quality surface mounted, I was amazed really!Useful range (4.5 - 30V is more than I will ever use)No additional power source needed.Low power consumption.There is a trimpot, and you can calibrate it when needed.PCB is very small, but you have two mounting holes on edges!
    You can use it in in many many DIY projects, will fit anywhere!I am going to fix it to home emergency power supply unit.
    I recommend buying this Voltmeter.Will work as expected.
  • Nice cheap timer relay

    posted by mr22turbo

    Great price! Screwed one open and the electronics on the inside are well made.Its possible for the timer to count down or up to the set time. Timer can be set in seconds, minutes and hours.
    There are different types of timers, check the product number, this one needs AC220V as a power source. Timer has possiblity to hook up a reset and pause switch. The relay can be connected as normally opended as well as normally closed. English manuals can easly be found on the internet through the product number.
    Great product for a great price!
  • Handy little meter

    posted by astroberi

    Bright, accurate, and very easy to install voltmeter. At first, I ordered one, then two more. I use them to monitor battery voltages on steadycam LCD monitor and lights. Third one is installed in UPS. Can be installed anywhere that needs voltage monitoring form 4 -30 V DC
    This is a panel mount version, if DX offered a fully enclosed version I am sure it would find many customers. A module only (no case) version is also offered on the site, with red and blue displays respectively.
    If you need a easy to read (esp in dark) cheap and accurate voltmeter, get it.
  • Precious instrument

    posted by JuanAlv

    It is a highly appreciated element to take the pulse to the load of a car. It is a small device that can be placed anywhere in the cabin, its construction is of quality.It has a beautiful blue screen that indicates the amperage reading accuratelyResistance shunt which has the device is large and looks very robust to be able to install without problems in the engine compartment without fearing that it can deteriorate with temperature or with a sharp blow.
    Beautiful and useful automobile generator current meter.
    Excellent value for money

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