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lcd pen Customers Reviews

  • pH meter with laboratory precision.

    posted by lasermanathome

    This type pH meter is known by me, during laboratory research I have used these meters for years.They are as reliable as table-instruments but are much smaller and more easy to handle.The two ponits calibration make that the zeropoint((pH 7.00) is better than a pH 7.00 puffer and an alcaic-or acid puffer .The puffersalts are delivered too, making pure puffers ask skilled and proper work
    For years ago we bought these meters for abot 7 times the price, DX asks, so a real bargain.They are able to deliver years of proper function when they are handled with the care they need.Dispite of the price, this is NOT a toy and will ask professional skills to work with the the proper way.They are MUCH better than the pH meters suitable only for swimmingpools.
    The lab-grade precision and the price are only reached with proper handling and they are VERY sensitive for wrong handling or careless storage.The user needs knowledgment about chemistry and proper handling.These pH meters are not suitable to use them as a toy, they are really capable to satisfy the professionals.
  • Good tool

    posted by Viktor Yakymenko

    Functions; protective caps
    After its arrival the multimeter was not working. Tried different set of batteries, but it would not turn on at all. Since I did not want to send the item back, I disassembled it and saw the battery contacts were a little bit aside from the special metallic plane they were supposed to connect to. After bending the contacts everything started working fine.
    Good tool, but with an assembly fault (in my particular case) that could cause unnecessary shipments there and back.
  • A good PH meter

    posted by tapanmajumdar

    Sturdy constructionshows the result in secondssolution provided for calibrateeasy to useused in aquarium, works wellsmall screw driver provided for calibrationprice is not too high although not to low either
    not difficult to calibrate as the testing solution is provided along with the value, so you just have to prepare the solution and match the value, it incorrect, correct it with the screw drive and you are done calibrating.
    quite useful and handy to use....
  • Muy buen tester. Recomendado!

    posted by serie2

    Muy practico para tomar mediciones rapidas, la calidad de los materiales es excelente y muy resistente, es muy fácil de usar r sobre todo trae todas las funciones de un tester convencional pero ocupa solo una minima parte del tamaño de un tester.
    Viene con los cables, el manual y la batería incluida. Para un electrónico o electricista es muy muy recomendable.
    100% recomendable como equipo y con un precio muy accesible
  • Feature-packed LCD with good software support

    posted by gigamegawatts

    This is identical to the TFT01-2.4 LCD sold by ElecFreaks. You'll find tech specs and sample code on their web site.Compatible with the awesome UTFT library, with supports Arduinos, Chipkit (PIC) and some ARM processors. Specify the S6D1121 controller (model parm ITDB24E_8).Compatible with the TFT01 Arduino shield (DX 179397) - I'm using mine with this shieldPerformance with an Arduino is surprisingly good: no noticeable lag with line graphics or large fonts.
    Based on the comments at the bottom of the page, there seems to be some confusion about whether the unit has 40 or 44 pins. Mine has 40, but is labelled "sod44pin" at the bottom. Go figure.Haven't tried the SD card socket yet.
    Amazing number of features for the price.


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