ReviewsElectronical Test Pen

Grout Pen White Tile Paint Marker: Waterproof Grout Paint, Tile Grout Colorant and Sealer Pen - White, Wide 15mm Tip (20mL)

  • ADVANCED FORMULA: Non-toxic, water-based colorant that covers grubby grout stains making it look brand new again.
  • CAP COLOR: Use the color chart (see images) for most accurate color depiction. Pen cap represents each pen's color but is not expected to be the exact shade, do a small test area first.
  • SEALED GROUT: Grout Pen may not bond to recently sealed grout. Test the grout with a few drops of water. If the grout does not absorb the water within a few minutes then the grout was likely sealed.
  • TIP MAY WEAR DOWN: Tip is made of cotton, pressing too hard will damage tip. Contact seller for replacement tips if needed.
  • SHAKE ONLY WITH CAP ON: Tip is removable and may fall out if shaken hard, only shake pen with cap on (note - Pen does not need to be shaken at all, instead gently pump tip to activate).
  • DRY TIP: Pen needs to be primed before use, all new Grout Pens come with a dry white tip. To activate gently pump the tip (20-30 times) until fully saturated.
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Grout Pen Light Grey Tile Paint Marker: Waterproof Tile Grout Colorant and Sealer Pen - Light Grey, Narrow 5mm Tip (7mL)

  • ADVANCED FORMULA: Non-toxic, water-based colorant that covers grubby grout stains making it look brand new again.
  • CAP COLOR: Use the color chart (see images) for most accurate color depiction. Pen cap represents each pen's color but is not expected to be ab exact shade, do a small test area first..
  • SEALED GROUT: Grout Pen may not bond to recently sealed grout. Test the grout with a few drops of water. If the grout does not absorb the water within a few minutes then the grout was likely sealed..
  • TIP MAY WEAR DOWN: Tip is made of cotton, pressing too hard will damage tip. Contact seller for replacement tips if needed.
  • SHAKE ONLY WITH CAP ON: Tip is removable and may fall out if shaken hard, only shake pen with cap on (note - Pen does not need to be shaken at all, instead gently pump tip to activate).
  • DRY TIP: Pen needs to be primed before use, all new Grout Pens come with a dry white tip. To activate gently pump the tip (20-30 times) until fully saturated..
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Voltage Tester, Non-Contact Voltage Tester with Dual Range AC 12V-1000V/48V-1000V, Live/Null Wire Tester, Portable Electrical Tester with LED Light, Suitable for Everyday and Work

  • ✅【Adjustable Sensitivity & Dual Range Test】The sensitivity is adjustable, making the measurement more sensitive and flexible.
  • the voltage tester has dual ranges, and the sensitivity can be adjusted as needed. Press the S key to switch the AC voltage range between 12V-1000V and 48V-1000V..
  • ✅【Safe Non-Contact Voltage Detector】The test can be performed without physical contact, and the isolation process ensures the safety of the test. This new test pen is easy to use, just touch an electrical outlet or stand near a live wire..
  • ✅【Sound and Light Alarm & LED Flashlight】. High-brightness, low-wattage white LED flashlight helps illuminate work areas in the dark.
  • illuminator and probe are combined into one for easy measurement..
  • ✅【Sophisticated Design】Automatically detect the test pen when it is turned on. Automatic shutdown when no operation and AC voltage detected. The pocket-sized pen hook allows you to carry it in your shirt pocket..
  • ✅【Low Battery Indicator Light】When the battery voltage is lower than 2.6V, the working indicator light will flash three times, the buzzer will sound, and the detector will automatically shut down. Please replace the battery in time. If there is a problem, please contact us..
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Drimark Counterfeit Detection Dry Mark Counterfeit Detector Pen 3 Pack 3513B

  • The original and best counterfeit detector pen, patented by dry mark in 1991..
  • Superior chemical test for counterfeit US paper money..
  • A simple mark on paper currency: dark mark means counterfeit, light mark passes test.
  • The only counterfeit detector pen still made in the USA. Others are Manufactured in China and Mexico..
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Grout Pen Grey Tile Paint Marker: Waterproof Tile Grout Colorant and Sealer Pen - Grey Narrow 5mm, 2 Pack with Extra Tips (7mL)

  • ADVANCED FORMULA: Non-toxic, water-based colorant that covers grubby grout stains making it look brand new again.
  • CAP COLOR: Use the color chart (see images) for most accurate color depiction. Pen cap represents each pen's color but is not expected to be ab exact shade, do a small test area first..
  • SEALED GROUT: Grout Pen may not bond to recently sealed grout. Test the grout with a few drops of water. If the grout does not absorb the water within a few minutes then the grout was likely sealed..
  • TIPS MAY WEAR DOWN: Tips are made of cotton, pressing too hard will damage tip. Contact seller for replacement tips if needed.
  • SHAKE ONLY WITH CAP ON: Tip is removable and may fall out if shaken hard, only shake pen with cap on (note - Pen does not need to be shaken at all, instead gently pump tip to activate).
  • DRY TIP: Pen needs to be primed before use, all new Grout Pens come with a dry white tip. To activate gently pump the tip (20-30 times) until fully saturated..
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Datalogic Falcon X3+ Mobile Computers

  • This digital pen instrument is an ideal instrument for any aquarium, fishery, swimming pool, school laboratory, food and beverage, etc. Moreover, this digital water quality tester is ideal for all basic water testing applications..
  • Due to its advanced microprocessor technology, the product is efficient and accurate..
  • The value of water quality inspection pen can show the impurity content. The larger the value, the greater the impurity content.
  • on the contrary, the less impurity content..
  • The factors that affect the test value are: the temperature of the water (the tester cannot test high-temperature water, such as boiled water).
  • the flow rate of the water (the tester cannot be used to test flowing water) Hold function: save the measurement for easy reading and recording..
  • Auto-off function: After 10 minutes of non-use, the meter can be turned off to save battery power..
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Diamond Tester＋60X LED Magnifying Glasses Jeweler Tool Kit Combo，for Novice and Expert - Diamond Selector II 9V Battery Included(Diamond Tester+)

  • ✔【Intuitive Design】Molo Diamond Tester Pen comes with LED lights and audio indication. During a test, if the stone tested is a diamond, the LED lights will light up as the stone passes each test conducted by the Diamond detector. Once our Diamond Tester Pen has completed all of its tests, the pen will make a beep sound as well as show a row of fully lite LED lights..
  • ✔【Fast Results】Molo’s Diamond Tester Pen is design to deliver fast, accurate results. You will be able to know if something is fake in a matter of seconds..
  • ✔【Simple to Use】Molo Diamond Tester Pen is simple to operate to get results, professional(s) are not required. Simply turn on our Diamond Tester Pen detector.
  • place the tip of the Diamond Tester on the gem stone (lightly pressed is sufficient) and If the stone is fake, crystal or cubic zirconia, the tester will not beep. To determine the clarity of a diamond use 60X LED lighted Loupe, magnifying glasses..
  • ✔【Portable】Molo Diamond Tester Pen and 60X LED Lighted Loupe each comes with its own convenient carrying cases. Both items are small and can fit into any purse or backpack. Molo’s Diamond Tester Pen and 60X LED Lighted Loupe combo is a must have tool kit when you are going to a garage sale, flea market, swap....
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APEX AAO1 Audio Oscillator

  • Body Size: 11 x 4.65 x 3.6mm / 0.43" x 0.18" x 0.14" (L*W*H).
  • DIP Quartz Crystal Oscillators for RISC & CISC Microcontrollers.
  • Widely used in TV, electronics, PC cards, electronical meter, DVD, MP3, MP4, etc.
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Diamond Tester Pen,High Accuracy Jewelry Diamond Tester＋60X Mini LED Magnifying Jeweler Tool Kit,Professional Diamond Selector for Novice and Expert, Thermal Conductivity Meter- 9V Battery Included

  • ■【Intuitive Design】Hqdz-td Diamond Tester Pen comes with LED lights and audio indication. During a test, if the stone tested is a diamond, the LED lights will light up as the stone passes each test conducted by the Diamond detector. Once our Diamond Tester Pen has completed all of its tests, the pen will make a beep sound as well as show a row of fully lite LED lights..
  • ■【Simple to Use】Hqdz-td Diamond Tester Pen is simple to operate to get results, professional(s) are not required. Simply turn on our Diamond Tester Pen detector.
  • place the tip of the Diamond Tester on the gem stone (lightly pressed is sufficient) and If the stone is fake, crystal or cubic zirconia, the tester will not beep..
  • ■【Fast Results】Hqdz-td's Diamond Tester Pen is design to deliver fast, accurate results. You will be able to know if something is fake in a matter of seconds..
  • ■【Portable】Hqdz-td Diamond Tester Pen and 60X LED Lighted Loupe each comes with its own convenient carrying cases. Both items are small and can fit into any purse or backpack.Diamond Tester Pen and 60X LED Lighted Loupe combo is a must have tool kit wh....
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Zgood Lab Vibrator 4\ Round Equipment Shaker Oscillator Machine JT-14

  • Body Size: 2 x 6mm / 0.08" x 0.24" (D*L).
  • DIP Quartz Crystal Oscillators for RISC & CISC Microcontrollers.
  • Widely used in TV, electronics, PC cards, electronical meter, DVD, MP3, MP4, etc.
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Best Sellers Diamond Tester Pen＋60X Mini LED Magnifying,High Accuracy Jewelry Diamond Tester Tool,Environmental Protection 9V Battery,Professional Diamond Selector for Novice and Expert

  • ✔【Intuitive Design】Hqdz Diamond Tester Pen comes with LED lights and audio indication. During a test, if the stone tested is a diamond, the LED lights will light up as the stone passes each test conducted by the Diamond detector. Once our Diamond Tester Pen has completed all of its tests, the pen will make a beep sound as well as show a row of fully lite LED lights..
  • ✔【Simple to Use】Hqdz Diamond Tester Pen is simple to operate to get results, professional(s) are not required. Simply turn on our Diamond Tester Pen detector.
  • place the tip of the Diamond Tester on the gem stone (lightly pressed is sufficient) and If the stone is fake, crystal or cubic zirconia, the tester will not beep. To determine the clarity of a diamond use 60X LED lighted Loupe, magnifying glasses..
  • ✔【Fast Results】Hqdz’s Diamond Tester Pen is design to deliver fast, accurate results. You will be able to know if something is fake in a matter of seconds..
  • ✔【Portable】Hqdz Diamond Tester Pen and 60X LED Lighted Loupe each comes with its own convenient carrying cases. Both items are small and can fit into any purse or backpack. Hqdz’s Diamond Tester Pen and 60X LED Lighted Loupe combo is a must have tool kit when you are going to a garage sale, flea market, swap....
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