Best Aneng Circuit Testers in 2026

【Multi-function 】The circuit tester offers full range of electric measurements:AC&DC Voltage/Resistance/Continuity/Frequency/Capacitance//Live Wire/Diode/Phase Sequence.

【Non Contact Voltage Tester】The electric detector enables you to detect voltage without any contact which largely avoids electrical shock.

【Beeper&Indicator Bar】Both are activated when voltage is detected.The frequency of warning tone and the color of indicator light varies depending on the voltage level

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. reads weights of adiamond use 200g/0.01g Mini Jewelry Scale, To determine the clarity of a diamond use 60X LED lighted Loupe, magnifying glasses.

This pocket scale has 200 gram max weight capacity and reads weights in increments of 0.01g. High precision sensors make sure the accuracy. 6 weigh modes available - g/ oz/ gn/ ct/ dwt/ ozt.Tare & Auto-off: You can use the tare function to zero the weight of container within 200g. Energy saving by 3 minutes auto-off function.

【More Safety】CE CAT.II300V RoHS Certificate. No gloves are recommended during the test, Testing AC voltage needs the human body and ground wire to form a circuit. No Electric Shock Risk, No Dangerous, More Accurate Readings. The current flowing through the human body is less than 0.1uA. (Min current the human body sense：1mA). The internal circuit of the Voltage Pen is connected in series with a large resistor, which will burn out when the current is too large, and the circuit will disconnect.

【Alarm Mode】The buzzer and indicator light will be triggered when voltage is detected. High-frequency beeps means high voltage and live wire are detected. Low-frequency beeps sound mean low voltage and null wire are detected.

【Measurable Voltage】Equipped with a sturdy metal NCV probe for testing AC voltage; the test probe touches the conductor with AC voltage, and the voltage reading will show on display. To obtain more accurate values, it is recommended not to wear gloves when using.

✔【Intuitive Design】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】Mollo 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 30X60X LED lighted Loupe, magnifying glasses.

✔【Portable】Mollo Diamond Tester Pen and 30X60X LED Lighted Loupe each comes with its own convenient carrying cases. Both items are small and can fit into any purse or backpack. Mollo’s Diamond Tester Pen and 30X60X LED Lighted Loupe combo is a must have tool kit when you are going to a garage sale, flea market, swap meet, etc. Alternatively, its also a great tool to have when testing your own jewelry.

【Complete Tool for Diamonds】Diamond tester package comes with 1 x Jewelry tester, 1 x Jewelry loupe, 1 x leather pouch case for pen, 1 x leather pouch case for Microscope, 1 x 9V battery, 1 x Testing Platform, 1 x Tweezers, 7pieces in total, which are complete and practical for you to test or observe diamonds, bringing you a good using experience.

【Clear Screen Design】These high accuracy diamond testers are designed with a clear screen, so you can get the useful data quickly; The item you are testing will be a true diamond when the data is above 9, and a true emerald crystal agate when the data is 7, you will be able to know in a few seconds whether an item is fake or not, saving your time to recognize.

【Multipurpose】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, such as diamonds, jades, emeralds, crystals, agates, gems and so on, making it possible for you to distinguish and observe them clearly and easily.

Fast and accurate: The Diamond Tester Pen is equipped with an LED light and audio indication. During the test, the LED lights up if the stone being tested is a diamond, and once our Diamond Tester Pen has completed all tests, the pen will beep as well as display a row of fully lit LEDs.

Easy to use: Simply turn on our diamond tester pen detector; place the tip of the diamond tester over the stone (a gentle press is sufficient) and if the stone is fake, crystal or cubic zirconia, the tester will not beep. To determine the clarity of the diamond, use a Loupe, magnifying glass with 60X LED illumination.

Multi-functional testing: This gemstone testing device is not only a diamond tester, but also a multi-gem tester. It can detect the authenticity of gemstones including: diamonds, sapphires, rubies, crystals, onyx, emeralds and other gemstones of all sizes.