---
product_id: 105191677
title: "Sigma Instruments-Sg 1040 Battery Powered Digital Insulation Tester 500V/1000V Dc 40Gohm,Autorange-With Calibration Certificate"
brand: "sigma instruments"
price: "A$122"
currency: AUD
in_stock: true
category: "Sigma Instruments"
url: https://www.desertcart.com.au/products/105191677-sigma-instruments-sg-1040-battery-powered-digital-insulation-tester-500v
store_origin: AU
region: Australia
---

# Test voltage up to 1000V DC with 40GΩ range 3999 counts jumbo LCD with backlight Battery powered for true portability Sigma Instruments-Sg 1040 Battery Powered Digital Insulation Tester 500V/1000V Dc 40Gohm,Autorange-With Calibration Certificate

**Brand:** sigma instruments
**Price:** A$122
**Availability:** ✅ In Stock

## Summary

> ⚡ Stay ahead with precision power – test smarter, not harder!

## Quick Answers

- **What is this?** Sigma Instruments-Sg 1040 Battery Powered Digital Insulation Tester 500V/1000V Dc 40Gohm,Autorange-With Calibration Certificate by sigma instruments
- **How much does it cost?** A$122 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/105191677-sigma-instruments-sg-1040-battery-powered-digital-insulation-tester-500v)

## Best For

- sigma instruments enthusiasts

## Why This Product

- Trusted sigma instruments brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smart Auto-Ranging:** Automatically adjusts measurement range to deliver accurate readings without manual hassle.
- • **Certified Reliability:** Comes with a calibration certificate to guarantee professional-grade accuracy and trust.
- • **Powerful Testing Range:** Test insulation resistance at 250V, 500V, or 1000V DC with a high driving current ≥15mA for reliable results.
- • **User-Friendly Visibility:** Large 3999-count digital backlit display ensures clear readings even in low-light environments.
- • **Precision at Your Fingertips:** Dual display shows voltage and insulation resistance simultaneously for instant insights.

## Overview

The Sigma Instruments SG 1040 is a battery-powered digital insulation tester featuring a 3999-count backlit LCD, autoranging capability, and testing voltages of 250V, 500V, and 1000V DC. It offers a maximum insulation resistance measurement of 40GΩ with a high driving current of ≥15mA, dual display for voltage and resistance, overload protection, and includes a calibration certificate for assured accuracy.

## Description

Digital insulation tester autorange, 3999 counts, 250v, 500v, 1000vdc, 40gohm with backlight and overload protection, with timer. 3999 Digits jumbo lcd display with backlight. Maximum reading 3999; test of insulation resistance at 250 v, 500 v or 1000 v with high driving capacity of ≥ 15ma. Dual display of the testing voltage and insulation value simultaneously. Data hold. Auto ranging multimeter

## Features

- Display: 3999 counts digital, with backlight and overload protection, with timer
- 250vdc, 500vdc, 1000vdc, 40gohm
- Maximum reading 3999, test of insulation resistance at 250 v, 500 v or 1000 v with high driving capacity of ≥ 15ma.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01DO3CDMM |
| Best Sellers Rank | #106,434 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #108 in Insulation Resistance Meters |
| Brand Name | Sigma Instruments |
| Colour | Black |
| Country of Origin | China |
| Customer Reviews | 3.4 3.4 out of 5 stars (45) |
| Included Components | Digital Insulation Tester |
| Item Dimensions | 7.4 x 18.8 x 20.2 Centimeters |
| Item Weight | 920 Grams |
| Manufacturer | Sunil Associates, Sunil Associates, Ashoka Place, Main Road ,Opp. Metro Piller No 211, 23 West Patel Nagar , New Delhi 110008 ; +91 7042836466 |
| Manufacturer Contact Information | Sunil Associates, Ashoka Place, Main Road ,Opp. Metro Piller No 211, 23 West Patel Nagar , New Delhi 110008 ; +91 7042836466 |
| Measurement Type | Multimeter |
| Minimum Operating Voltage | 250 Volts (DC) |
| Model Number | insu_1 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Packer Contact Information | Eagle Network Supply Pvt. Ltd. , Khasra No. 399 Delhi - 110030 ; +91 1143528338 |
| Part Number | insu_1 |
| Power Source Type | Battery Powered |
| Style Name | Digital |
| Unit Count | 1 Count |

## Product Details

- **Brand:** Sigma Instruments
- **Colour:** Black
- **Item Weight:** 920 Grams
- **Power Source:** Battery Powered
- **Style:** Digital

## Images

![Sigma Instruments-Sg 1040 Battery Powered Digital Insulation Tester 500V/1000V Dc 40Gohm,Autorange-With Calibration Certificate - Image 1](https://m.media-amazon.com/images/I/51Gss48z2pL.jpg)
![Sigma Instruments-Sg 1040 Battery Powered Digital Insulation Tester 500V/1000V Dc 40Gohm,Autorange-With Calibration Certificate - Image 2](https://m.media-amazon.com/images/I/71eh9uNgCKL.jpg)

## Questions & Answers

**Q: 1.What is the measure range (insul-resistance), at voltages (250/500/100V)?  2. What is the resolution of measured resistance at above ranges?**
A: Dear Sir,
         Kindly refer your message, Voltage Range can measure : 250VDC (0.25MOhm to 400MOhm); 500VDC (0.5MOhm to 4GOhm); 1000VDC (1.5MOhm to 40GOhm)

Regards
Sunil Associates

**Q: how many test can be carried out by 1 set of new battery**
A: Dear Sir,
         Kindly refer your message, in the instrument we provide AA 1.5V Alkaline battery which have much higher current capacity as compared to the normal battery. Also it depends upon the test you carry on your sample. If you do testing 5 to 10 min on one sample then the output will vary as compare to normal testing.

**Q: Is there any warranty on product .**
A: Sir, it has 6 months warranty against manufacturing defects.

**Q: Can we use it for testing 11Kv or 33kV High tension line fault testing ?**
A: Yes you can check the insulation of your sample.

## Frequently Bought Together

- Sigma Instruments - SG 1040 Digital Insulation Tester 500V/1000V Dc 40Gohm, Autorange - with Calibration Certificate
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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-09-11*