weight | 17.7kg | ||








The UNI-T UT501A is a professional digital insulation resistance tester (Megohmmeter) designed for electrical insulation testing up to 5GΩ. It features selectable test voltages of 100V, 250V, 500V, and 1000V, making it suitable for testing motors, transformers, cables, switchgear, electrical installations, and industrial equipment. With automatic discharge protection, backlit LCD, audible and visual alarms, and AC voltage measurement up to 750V, the UT501A is an ideal tool for electricians and maintenance professionals.
| Specification | Details |
|---|---|
| Brand | UNI-T |
| Model | UT501A |
| Product Type | Digital Insulation Resistance Tester (Megohmmeter) |
| Display | Digital LCD (2000 Counts) |
| Maximum Display | 1999 |
| Insulation Resistance Range | 0MΩ – 5GΩ |
| Test Voltages | 100V / 250V / 500V / 1000V |
| AC Voltage Range | 30V – 750V |
| Test Current | ≥1mA |
| Short Circuit Current | <2mA |
| Auto Range | Yes |
| Automatic Discharge | Yes |
| LCD Backlight | Yes |
| Light Alarm | Yes |
| Buzzer Alarm | Yes |
| High Voltage Indicator | Yes |
| Overload Protection | Yes |
| Low Battery Indicator | Yes |
| Test Voltage Display | Yes |
| 10MΩ Internal Resistance Test | Yes |
| Operating Temperature | -10°C to 40°C |
| Power Supply | 6 × 1.5V AA (LR6) Batteries |
| Product Dimensions | 150 × 100 × 71 mm |
| Weight | Approx. 500 g |
| Certifications | CE, FCC, RoHS |
| Origin | Mainland China |
weight | 17.7kg | ||








Specification | Details |
Model Number | UT516B |
Battery Included | No |
High-concerned Chemical | None |
Dimensions | 510 × 320 × 420 mm |
Testing Voltage | 12 kV |
Measuring Range | 10 TΩ |
Display Type | Digital Only |
DIY Supplies | Electrical |
Brand Name | UNI-T |
Origin | Mainland China |
Certification | None |
LCD Backlight:Clearly view test results in any lighting condition with the LCD backlight.
Memory Storage:Store test results in the tester memory for easy access and review.
Ut516b|Uni T Ut516b|High Voltage Range:Test up to 12kV with 6 selectable ranges for comprehensive insulation resistance measurement.
USB Data Transfer:Effortlessly transfer test data to a PC via USB, ensuring accurate records for analysis.
Comparative Measurement:Compare measurements to previous tests, aiding in maintenance and troubleshooting.
report
The UT516B is a digital high voltage insulation resistance tester with 6 ranges: 500V, 1000V, 2500V, 5000V, 10000V and 12000V.
Fine adjustment of voltage with 10% step at each range (except 12000V) is available.
Test data can be saved in the tester memory and transferred to a PC via the dedicated USB cable, or be transferred to a PC in real time.
The tester, with high performance and easy operation, is widely used in the measurement and maintenance of power equipment and power supply circuits.
Features:
1. AC/DC voltage
2. USB data transfer
3. Low battery indication
4. Data storage
5. LCD backlight
6. Polarization Index
7. Over-range alarm
8. 9999 Max display
9. Comparative measurement
10. Measurement time selection
Take notice: Battery was not included for air shipping, please prepare it by yourself.
Specifications of UT516B Insulation Resistance Tester
High Voltage Range: 500V to 12000V
Accuracy: ±(5%+3) at 500V to 2500V, ±(8%+3) at 5000V to 10000V, ±(10%+3) at 12000V
Memory: 9999 data sets
USB Communication: Yes
Battery Indicator: Yes
Polarization Index: Yes
|Uni T Ut516b|
**Advanced Measurement Capabilities**
The UNI-T UT516B High Voltage Insulation Resistance Tester is an essential tool for electrical professionals and DIY enthusiasts alike. With a versatile range of 500V to 12000V, this digital megohmmeter is equipped to handle a wide array of insulation resistance testing scenarios. Its high precision, with an accuracy of ±(5%+3) at 500V to 2500V, ±(8%+3) at 5000V to 10000V, and ±(10%+3) at 12000V, ensures reliable results for even the most critical measurements.
**Seamless Data Management and Transfer**
The UT516B's USB communication capability allows for quick and easy data transfer to a PC, enabling users to store and analyze test results with ease. The dedicated USB cable simplifies the process, making it a breeze to share data with colleagues or clients. Additionally, the tester's memory can store up to 9999 data sets, providing ample storage for extensive testing projects.
**User-Friendly Design and Functionality**
The UT516B is not only a powerful tool but also a user-friendly device. Its LCD backlight ensures clear visibility in low-light conditions, while the polarization index feature offers additional insights into the test results. The tester's design is compact and lightweight, making it suitable for use in a variety of environments. Moreover, the low battery indicator alerts users when it's time to replace the batteries, ensuring that the tester is always ready for use.
**Versatile Application and Safety**
The UNI-T UT516B High Voltage Insulation Resistance Tester is designed for use in electrical maintenance and power supply circuit testing. Its robust construction and safety features make it an essential tool for professionals working in the electrical field. Whether it's for routine maintenance or critical repair, the UT516B is the go-to device for reliable, precise insulation resistance testing.










Specification | Details |
Model Number | UT533 |
Brand Name | UNI-T |
Battery Included | No |
High-concerned Chemical | None |
Operating Mode | Auto Range |
Operating Temperature | 0 – 40 ℃ |
DIY Supplies | Electrical |
Certification | CE |
Origin | Mainland China |
DC Voltage | 1000V |
AC Voltage | 1000V |
Display Type | Digital Display |
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Uni-T UT533 digital multimeter insulation resistance meter 2 Gigaohm 1000V 2 in 1 for electric cable motor transformer
Features of UT533 Insulation Multimeter 1. AC/DC voltage measurement 2. AC/DC current measurement 3. Insulation resistance measurement 4. Resistance & Capacity test 5. Frequency & Temperature test 6. 1000V output voltage 7. Double insulation design
Specifications | Range | UT533 |
Insulation resistance | 0.1MΩ~2GΩ | ±(5%+5) |
Output voltage | 50~1000V | – |
AC voltage (V) | 6V~1000V | ±(2%+3) |
DC voltage (V) | 6mV~1000V | ±(0.3%+4) |
AC Current | 60mA ~600mA | ±(1.5%+2) |
DC Current | 60mA ~600mA | ±(1.0%+2) |
Resistance (Ω) | 600Ω~40MΩ | ±(1.5%+3) |
Capacitance (F) | 10nF~100uF | ±(3%+5) |
Frequency (Hz) | 60Hz~1MHz | ±(0.1%+3) |
Temperature(鈩�) | -40鈩� ~ 537鈩� | ±(1%+10) |








The DY4100 Digital Earth Resistance Tester is a professional instrument designed to accurately measure earth (ground) resistance and earth voltage for electrical installations. With a measurement range of 0.01Ω to 2000Ω, high accuracy, and a compact handheld design, it is ideal for electricians, maintenance engineers, power utilities, telecommunications, lightning protection systems, and industrial applications. The tester features a large digital display, data hold, low battery warning, and rugged construction suitable for outdoor use.
| Specification | Details |
|---|---|
| Model | DY4100 |
| Product Type | Digital Earth Resistance Tester |
| Display | Digital LCD |
| Earth Resistance Range | 0.01Ω – 2000Ω |
| Resistance Accuracy | ±(2% + 3 digits) |
| Earth Voltage Range | 0 – 30V AC |
| Earth Voltage Accuracy | ±(3% + 5 digits) |
| Resolution | 0.01Ω |
| Data Hold | Yes |
| Working LED Indicator | Yes |
| Function Symbol Display | Yes |
| Low Battery Warning | Yes |
| Power Supply | 6 × AA 1.5V Batteries (Not Included) |
| Dimensions | 150 × 100 × 70 mm |
| Net Weight | Approx. 680 g |
| Certification | CE |
| Origin | Mainland China |









2500VInsulationResistanceTesterMeterZC11D-10
●Description
Insulation Resistance Tester Meter ZC11D-10 is required in use away from magnetic fields placed horizontally. 2500V resistance megger megohmmeter is as insulating determination may be the ends of the analytes are connected respectively on the two terminals of the "Ground" and "Line". At rated speed rotating cranks, the resistance value can be measured. This ZC11D-10 insulation ohmmeter is applicable to measure the insulation resistance of motors, cables, transformers, electronic components, home appliances and other electrical devices, as well as insulation measurement of resistance wire strain gauges.
●Features
●Use of conditions: Temperature -25°C~+40°C, Relative Humidity less than 80%. ●Nominal crank speed: 150r/min. ●Scale arc length: Approximately 80mm. ●Tilt effect: Up to 5° inclination from horizontal. ●External magnetic field resistant. ●Suitable for industrial electrical insulation testing.
●Specifications
Rated Voltage: 2500V
Rated Voltage Tolerance: ±10%
Measuring Range: 0~2500MΩ
Accuracy: Class 20
Reference Resistance: 30MΩ
Relative Humidity: ≤80%RH
Operating Temperature: -25°C~40°C
Working Position: Horizontal
Rated Rocking Speed: 150rpm
Dimensions: 215×135×130mm
Net Weight: Approx. 1.5kg
Gross Weight: ≤11kg
●Operation
●Use the instrument away from magnetic fields. ●Keep the tester in a horizontal position. ●Connect the test object to the "Ground" and "Line" terminals. ●Ensure proper contact before testing. ●Discharge the equipment before and after measurement. ●Do not use during lightning or on live circuits. ●Rotate the handle smoothly at approximately 150rpm. ●Store the instrument in a dry, clean place.
●Package Includes
●1×2500VInsulationResistanceTesterMeterZC11D-10




Specification | Details |
Brand Name | Victor |
Brand | Victor Ruoshui |
Model Numbers | 5150 / 5200 / 5300 |
Product Name | Electronic Digital Caliper |
Type | Electronic Digital Display Caliper |
Caliper Type | Digital Caliper |
Material | Stainless Steel |
Measuring Range | 0–150mm / 0–200mm / 0–300mm |
Resolution | 0.01mm |
Accuracy | ±0.01mm (Typical), ±0.02mm |
DIY Supplies | Electrical |
Customized Support | OEM |
Warranty | 1 Year |
Origin | Mainland China |
Place of Origin | Guangdong, China |
High-concerned Chemical | None |
Function | Supported |
External Diameter Measurement | ✔ Yes |
Internal Diameter Measurement | ✔ Yes |
Depth Measurement | ✔ Yes |
Step Measurement | ✔ Yes |
Digital Display Reading | ✔ Yes |
Feature | Details |
Display Type | Digital LCD |
Construction | Stainless Steel Body |
High Precision | 0.01mm Resolution |
Durable Design | Corrosion Resistant |
Easy Reading | Large Digital Display |
Applications | Mechanical, Electrical, Industrial, Workshop Use |
Model Type | Measuring Range |
5150 | 0–150 mm |
5200 | 0–200 mm |
5300 | 0–300 mm |
Item | Details |
Product | Victor Digital Caliper |
Warranty | 1 Year |
OEM Support | Available |
Product Description
VICTOR RuoShui 5150 Electronic Digital Vernier Caliper Range 150mm 200mm 300mm Measure Length Inside Outside Diameter
Model | VICTOR 5150 | VICTOR 5200 | VICTOR 5300 |
Measurement range | 150mm/6'' | 200mm/8'' | 300mm/12'' |
Accuracy | 0.01mm/0.0005'' | 0.01mm/0.0005'' | 0.01mm/0.0005'' |
L | 235mm | 287mm | 390mm |
A | 40mm | 50mm | 60mm |
B | 21mm | 24mm | 27mm |
C | 16mm | 16mm | 16mm |
D | 3.5mm | 3.5mm | 4.0mm |
Repeatability | 0.01mm/0.0005'' | ||
Max. measurement speed | 3 m/s | ||
Operating temperature | 0℃~40℃ | ||
Power | SR44(silver oxide cell) 1.5V 1 battery | ||
Average battery life | The warranty is above 1 year under normal use | ||
Detailed Images






The DEG360 Analog Multimeter is a traditional analog measuring instrument designed for measuring AC/DC voltage, DC current, and resistance. It is a reliable, easy-to-use testing tool for electricians, technicians, students, and electronics enthusiasts. The analog pointer display provides real-time readings, making it suitable for troubleshooting electrical circuits, household appliances, and electronic equipment.
| Specification | Details |
|---|---|
| Model | DEG360 |
| Product Type | Analog Multimeter |
| Display | Analog Pointer Scale |
| Measurement Functions | AC/DC Voltage, DC Current, Resistance |
| Applications | Electrical & Electronic Testing |
| Weight (WT) | 0.3 kg (300 g) |



