ReviewsTester Pen

Diamond Tester Pen, High Accuracy Jewelry Diamond Tester,Professional Diamond Selector for Novice and Expert, Thermal Conductivity Meter,Accuracy Jewelry-Diamond Tester Pen

This gemstone testing equipment is not only a diamond tester, but also a multi gemstone tester. It can detect if a gemstone is real or fake, including: diamond, sapphire, ruby, crystal, agate, jadeite, and other precious stone of various sizes..
Simple to Use 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..
Professional Diamond Selector II will indicate genuine diamond or fake,Uses large / small switches for testing diamonds,Emits audible sounds to easily differentiate the readings,Batteries: 1 x 9v Battery ( included),Package Contents: 1 x Diamond Tester.
Popular among professionals, hobbyists, coin enthusiasts, and business owners alike. Excellent tools. Excellent Value. Great gift idea..
Application Range:Industrial Purpose, Circuit Board And Printing , Industry, Medicine, Gardening, Coin, Diamond,Stamp, Jewelry, Appraisal, Education, Geography, Home And Office.fast and safe This diamond selector tester designed for quick, precise, and safe diamond testing. No harm to diamonds. If you have any question....

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PAGOW 10pcs Multimeter Test Hook Clip, Electrical Testing Colorful Test Grabber Probe, for Testing Electronic Components Mini Grabber Clips

Non-contact AC Voltage Measurement Tester - probe type induction, plastic insulation, The tester will flash and beep when the device close to AC Voltage greater during the specified Voltage range without touch the measured object, to ensure the safety of the human body, more convenient monitoring..
Safely Sound & light Alarm Tester Pen- distinguish the live and Null wire through different frequency alarm sound. The higher the voltage, the higher the audible alarm frequency and rate of flashing lights great, even in noisy environments..
Accurately Multi-ranging Measurement - The electrical tester accurately detects AC Voltage ranging from 12V to 1000V, and distinguish them into 3 Voltage levels (low, moderate, high). NCV sensitivity automatically adjusts from low, medium and high while indicating Voltage level with audible beep..
Low Voltage Indicator & LED Light - The shining prompt of low voltage LED and alarm of the power tester pen can warn you to replace the battery in time, while the LED light allows operation even in dark environment..
Auto Power Off Tester -The electrical tester operated with 2 x 1.5V AAA batteries(not included), auto power off after no operation for 3 minutes to save energy. Lightweight, durable construction with convenient pocke....

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Diamond Tester Pen, ZAKVOP High Accuracy Jewelry Diamond Tester Tool, Upgraded Professional Diamond Selector for Novice and Expert, Portable Electronic Diamond Detector, Thermal Conductivity Meter

【Fast Results】: Diamond Selector II, Newest Diamond Tester Pen, high accuracy indicate genuine diamond or fake. This diamond selector tester designed for quick, precise, and safe diamond testing. No harm to diamonds..
【Simple Use】: The diamond tester pen is simple to operate to get results. Just adjust to the appropriate gear, put the tip of the diamond tester on the diamond and press it gently. When testing, the probe needle and the tested object must be at a 90° angle..
【Intuitive Design】: Professional Diamond Selector II will indicate genuine diamond or fake. The real diamond will make sound and LED light > = 9. Fake crystal, such as cubic zirconium ( CZ ), crystal, glass will be no sounds and LED lights.
【Jeweler Diamond Tester】: This diamond tester can not only detect the authenticity of diamonds, but also detect the authenticity of jewelry. It can detect gemstones including: sapphire, ruby, crystal, agate, jadeite and other gemstones of various sizes..
【Warm Reminder】: When testing diamond, your right index finger must keep touching the metal panel on the back of the tester, while you do not touch the panel if you test other gemstones. Do Not test any metal. Do Not wear glove..

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3 Pieces Voltage Meter Tester AC 12-1000V Non Contact Voltage Detector Buzzer Alarm Electrical Testing Led Flashlight Wire Tester Electrical Tool Battery Powered Tester Pen for Live Null Wire Judgment

High efficiency: the wire tester electrical tool(Batteries are not included) will send out a variety of alarms through sound and light, when a voltage is detected, the tip will light up and beep, which is easy to judge, saving time and energy.
The voltage pen tester uses a non-contact method to detect voltage, so you don't worry about the possibility of electric shock.
Sensitivity adjustment: this non contact voltage meter has 3 levels of sensitivity to choose from, the default is to enter the low level (buzzer beeps-once), press the [S] key to enter the middle range (the buzzer beeps twice), and press it again to enter the high level (The buzzer beeps three times), press again to return to the low gear (the buzzer beeps once.
Automatic shutdown function: when the ac voltage detector is not operated for about 5 minutes and no voltage signal is detected, the tester will automatically shut down.
The volt tester pen can be widely applied in circuit breakers, lighting devices, switches, sockets, wires and anywhere needed.
Low voltage indication: when the battery voltage is 2.6 V, the power indicator flashes 3 times, the buzzer will automatically shut down, please replace the battery in time.
You will get 3 electric current testers in the package, enoug....

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High Accuracy Diamond Tester and 2pc 30X Magnifying Glasses Professional Jeweler’Stool Kit Combo，for Novice and Expert - Diamond Selector II 9V Battery Included(Diamond Testers+)

✔Portable design:Designed for rapid, accurate and safe diamond testing. Through non-destructive testing, the operation is simple and precise.Diamond tester and magnifier are all equipped with convenient carrying cases..
✔Simple use: 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)..
✔Magnification : 30X with batteries included.For Gems, Coins, Antiques, Stamps, Reading, Inspection etc..
✔100% new and high quality eye magnifying glass.Foldable and tiny.It comes with its own hard plastic felt lined storage case, include a small loop to attach to a neck chain or key chain..
✔Package Contents: 1 x Diamond Tester, 1 x 9v Battery, 2 x 30x Jeweler’s Loupe..

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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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Digital Pen Type Multimeter INFURIDER YF-38B Handheld Auto-ranging Voltmeter Ohmmeter for DC AC Voltage,Resistance,Ohm Volt Test Meter with Diode Continuity

【High Accurately】Display with 2000 Counts,Volt meter can accurate autoranging measurement for AC DC voltage to 600V:+/-0.5% of reading.Resistance to 20MΩ. Features with data hold,Diode test and Continuity Buzzer..
【Save your Battery】Pen type digital volt tester with auto power off function and low battery indication, it will automatically shut down if you do not further operation after 20 mins..
【Backlight+Flashlight】Press “☀” button on the pen multimeter to turn on bright flashlight and LCD screen backlit, Then you can accurately testing and reading in the darkness..
【Overload Protection】YF-38B pen type digital multi tester features double insulation protection, CE 600V CAT Ⅲ. This volt tester is portable and stable performance, and works well as a voltage pen type and a necessity for a daily usage. .
【After-Sales Warranty】INFURIDER provide lifetime technical support, if you have any questions with our products. Do not hesitate to contact us! we will respond to you within 24hours..

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Dupeakya Professional Diamond Selector II, Gem Tester Pen Portable Electronic Diamond Tester Tool for Jewelry Jade Ruby Stone (Diamond Tester 2)

[FAST AND PRECISE ]: This gemstone tester pen is not only a diamond tester but also a multi-gemstone tester. It is designed to detect if a gemstone is real or fake, including: diamond, sapphire, crystal, ruby, agate, jadeite, etc. Professional Diamond Selector designed for quick, precise, and safe diamond testing..
[SIMPLE TO USE ]: Diamond Tester Pen is simple to operate to get results. 1. Put the battery in the tester. 2. Take off the probe cap. 3. Turn on the switch. 4. Make sure only one light lights up on the scale. 5. Make sure the " ready lamp" light is on. 6. (If test diamond, you then need to turn on the number of the light corresponding to the indoor temperature and diamond weight.)..
[TEST RESULT ANALYSIS ]: If lights 003e= 9 and have sounds, it is real diamond. If lights 003c 9 and no sounds, it is not diamond. If lights is 7 or 8, it is true crystal. If lights is 6 or 7, it is true jade. If lights is 4 or 5, it is glass.
[NOTICE]: * When testing, the probe needle and the tested object must be at a 90° angle. * When testing diamond, your right index finger must keep touching the metal panel on the back of the tester, while you do not touch the panel if you test other gemstones. * Do Not test any metal. * Don't wear gloves..

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WGGE AC Voltage Tester/Non-Contact Voltage Tester with Dual Range AC 12V-1000V/48V-1000V, Electrical Pen with LCD Display and Flashlight Buzzer Alarm, Detect Wire Breakpoint, Live/Null Wire Tester

Non-contact AC Voltage Measurement Tester - probe type induction, plastic insulation, The tester will flash and beep when the device close to AC Voltage greater during the specified Voltage range without touch the measured object, to ensure the safety of the human body, more convenient monitoring..
Safely Sound & light Alarm Tester Pen- distinguish the live and Null wire through different frequency alarm sound. The higher the voltage, the higher the audible alarm frequency and rate of flashing lights great, even in noisy environments..
Accurately Multi-ranging Measurement - The electrical tester accurately detects AC Voltage ranging from 12V to 1000V, and distinguish them into 3 Voltage levels (low, moderate, high). NCV sensitivity automatically adjusts from low, medium and high while indicating Voltage level with audible beep..
Low Voltage Indicator & LED Light - The shining prompt of low voltage LED and alarm of the power tester pen can warn you to replace the battery in time, while the LED light allows operation even in dark environment..
Auto Power Off Tester -The electrical tester operated with 2 x 1.5V AAA batteries(not included), auto power off after no operation for 3 minutes to save energy. Lightweight, durable construction with convenient pocke....

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Neoteck Non-Contact AC Voltage Tester Pen, AC 12-1000V, LED Flashlight, Buzzer Alarm for Live/Null Wire Judgment

【Non-contact Voltage Tester】 Ranging 12-1000V AC, You can easily distinguish the live and null wire through different level of alarm sound and LED indicator. ( Note Please:Not Suitable for Christmas Light Testing).
【Safe and Convenient】 The Voltage Pen Tester Detectes Voltage in a Non-Contact Way, So Do Not Worry about There Could be any Possibility of being Shocked by the Electricity.
【High Efficiency】 As Long As Voltage is Detected, the Led in the Tester Pen will Shine.
【Multifunction, Easy to Use】 It Also Acts as an Emergency Flashlight which can Illuminate the Working Area, You can Use the Non Contact Voltage Detector in Circuit Breakers, Lighting Fixtures, Switches, Outlets, Wires and Anywhere You Need it.
【CE CAT III600V RoHS Certificate】 A Professional Tester, It is Perfectly Suitable also for DIY'ers, Hobbyists and Home Owners, It Helps You Make the First and the Most Important Safety Check.

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eOUTIL Brake Fluid Tester Pen, Hydraulic Fluid Liquid Oil Moisture Analyzer with 5 LED Indicators, Auto Brake Diagnostic Testing Tool for DOT3 DOT4 Brake Fluid

SAFE&USEFUL---The unit is Mini Pen Liquid Moisture Water Tester Tool. Check the health status of DOT3, DOT4, DOT5 car brake fluid, it will be safer for your driving..
5 LED INDICATORS---5 LED to indicate percentage of water in the brake fluid with three colors green yellow and red. Even in the dark does not affect reading, make reading data easier..
EASY TO USE---The brake fluid tester is easy to use. Check the quality of brake fluid in car only takes seconds. Make it easier to operate for beginner. It's a must-have car tool for your car owners..
PORTABLE&DURABLE---Brake fluid tester pen is small compact size, easy to carry. Super strong ABS shell, has long service life..
AUTO TURN OFF---In order to save power, this test pen has the automatic shutdown function, it will automatically turn off the power 15 seconds after starting every time..

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