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Description
BENETECH GM3125 High Voltage Insulation Tester Resistance Tester, GM3125Features 1. Auto discharge function to make the operation safe 2. LCD backlight function 3. Digital display of measurement results 4. Live circuit warning symbols with audio sounds 5. Automatic shutdown function, the instrument will automatically shut down after 10 minutes without any operation 6. Set the test time function to automatically perform the measurement within the specified time 7. Low battery indicator 8. PI test (Polarization Index
Features1. Auto discharge function to make the operation safe
2. LCD backlight function
3. Digital display of measurement results
4. Live circuit warning symbols with audio sounds
5. Automatic shutdown function, the instrument will automatically shut down after 10 minutes without any operation
6. Set the test time function to automatically perform the measurement within the specified time
7. Low battery indicator
8. PI test (Polarization Index measurement)
9. PI measurement can automatically measure the resistance ratio according to the setting at any two points of time
10. External DC power supply (DC12V, 1A power adapter) can be used for measurement
Specifications
1. Display: MAX 999 counts LCD display (1000 counts only at 1T is displayed)
2. Over range indication: OL mark appears on insulation resistance range. LO mark appears on voltage range
3. Auto-ranging: Range shifts to upper range: 1000 counts. Range shifts to lower range: 95 counts (merely on the insulation resistance range)
4. Sample rate: 0.5-10 times / sec
5. Operable altitude: Less than or equal 2000m (Indoor use)
6. Operation circumstance: Temperature 0-40 Celsius Degree, humidity: Less than or equal 85%
7. Storage circumstance: Temperature -20-60 Celsius Degree, humidity: Less than or equal 90%
8. Overload protection: Insulation resistance: AC 1200V / 10s, Voltage: AC 720V / 10s
9. Voltage resistance: AC8320 (50/60Hz)/5 seconds (between electrical circuit and enclosure)
10. Insulation resistance: 1000M ohms of more / DC 1000V (between electrical circuit and enclosure)
11. Power Supply: DC 12V (8 x 1.5V LR14 batteries) (included)
12. Size: 153mm x 96mm x 220mm
13. Weight: 1032g (without batteries and test wires)
Specification:
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Exchange/Return Notes
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4.6 ★★★★★
Based on 22 reviews
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Product Reviews
★★★★★ 5
Fits well and comfortable!
Size: Large, Color: Eggshell White Black Mariner Stripe, Size: Large, Color: Eggshell White Black Mariner Stripe
This shirt fits my husband very well, it is true to size. It is soft and stretchy enough to be comfortable. I bought this as part of a costume but my husband wears it around the house now because it's so comfy.
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Reviewed in the United States on December 24, 2025
★★★★★ 1
You get what you pay for
Size: XX-Large, Color: Eggshell White Black Mariner Stripe
Like most of the other reviews here, the shirt runs too small and too short. Material was also incredibly uncomfortable. It also wasn't the color I was hoping it would be, but that's on me for not reading the fine print (eggshell white was very much not white)
If you're looking at this for a certain costume/cosplay idea, it's probably not what you're looking for.
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Reviewed in the United States on February 18, 2026
★★★★★ 5
Solid fit
Size: X-Large, Color: Eggshell White Black Mariner Stripe
Easy fit, comfortable material. Dont expect it to last forever but at the price its solid for the purpose of a halloween costume.
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Reviewed in the United States on November 1, 2025
★★★★★ 3
Runs small
Size: X-Large, Color: Navy
Runs small and is short. Nice dark navy color. I ordered a size up and it is still small.
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Reviewed in the United States on February 26, 2026
★★★★★ 5
Great tee
Size: X-Large, Color: Medium Grey Heather
It’s a nice cotton material…not thin, just perfect. After washing, it also kept its shape.
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Reviewed in the United States on February 18, 2026